AIYIMA T9 HiFi Bluetooth 5.0 Vacuum Tube Amplifier 2.1 channel DAC Stereo.

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

AIYIMA T9 Bluetooth 5.0 100W * 2 Tube Amplifier 2.0 Channel Vacuum USB DAC St....

AIYIMA T9 Bluetooth 5.0 100W * 2 Tube Amplifier 2.0 Channel Vacuum USB DAC St....

Mini Bluetooth Vacuum Tube Preamp USB DAC Headphone Amplifier Receiver APTX-HD Warm tips: 1. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. 2. USB input doesnt support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs kit, please prepare by yourself). 3. This is a preamp but NOT a amplifier or a phono preamp, CANT be used for turntables or passive speakers. The main purpose of L200 is to act as a buffer to sweet the sound. Parameters: Audio input: Bluetooth/USB/Stereo RCA Audio output: stereo L/R RCA / 3.5mm headphone jack Bluetooth version: 5.0 Bluetooth chip: QCC3034 (support SBC/AAC/APTX/APTX-LL/APTX-HD) USB input sampling rate: 16/24bit 44.1-48KHz USB input supported system: Win XP/7/8/10/MAC/Linux / OTG Matched headphone impedance: 16-300? Output power of headphone jack: 268mW16? Treble & Bass range: ±10dB Frequency response: 20Hz~25KHz (±3dB) Distortion: 0.1% S/N Ratio: >98dB RCA out level: 2V Working voltage: DC 12V/above 2A (5.5mm/2.5mm) Dimensions(W*D*H): 131*139*71mm / 5.16*5.47*2.80in Net weight: 550g / 1.21lb Package weight: 800g / 1.76lb Packing List: 1*L200 Tube Preamp 1*DC 12V Power Adapter 1*User Manual Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. QCC3034 Bluetooth chip, supports APTX-LL/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music. The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/6*1n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound. Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music.

(Upgraded) AIYIMA T9 Bluetooth 5.0 100W * 2 Tube Amplifier 2.0 Channel Vacuum USB DAC Stereo HiFi Home Audio Digital Class D Power Amplifier RCA/COA/Opt/PC-USB w/VU Meter. Box has damage opened to inspect the content and its condition. All still in manufacturers plastic no visible damage. Included pictures of the item. BrandAIYIMA Maximum Supply Voltage30 Volts Mounting TypeCoaxial,Plug Mount Interface TypeUSB, Coaxial Number of Channels2 Product Dimensions4.53L x 3.86W Strong output power and low frequency output: T9 Bluetooth Amp Each channel can output 100W(4), match perfectly and easily to drive all 3-8 passive speakers, adds a low frequency output easy to connect active subwoofer and build 2.1 channel system, the bass effects is greatly enhanced AIYIMA T9 Class D Power Amplifier With multiple digital audio inputs: Bluetooth 5.0 / USB / Coaxial / Optical / stereo RCA, compatible with most audio device such as phones, computers, tablets, TVs, TV, CD players etc. The perfect combination of DAC and amplifier, very suitale for audiophiles who have various audio devices Unique and Amazing Combination: this T9 home stereo amplifier with VU meter into whole in such a mini size, when enjoy HiFi music, the pointer dancing in the warm light with strong vintage feelings, dynamically decorates the audio system space HiFi clear sound with tone control: resonable circuit and concise wiring, adopts vacuum tubes to soften the sound and filter out the digital feelings, sounds warm and sweet without noise.T9 Power Amplifier Also with treble and bass knobs to adjust ones own preferable sound styles, presents HiFi music with rousing highs and deep lows Upgraded T9Practical functions to simplify use: with input selection and indicators,and you can cancel the hibernation prompt according to your needs,clearly to show the working status in real time; aluminum alloy case is specially designed, cool and unique to decorate your desktop space.With DC24V Power Adapter&With Remote Control(Not include AA Battery)

HiFi Vacuum Tube Preamp Bluetooth 5.0 Receiver Mini USB DAC Stereo Amp APTX-HD. * Open box, untested but I don’t believe it has ever been used. I did touch the open bulb without gloves.

DOUK AIYIMA T9 PRO - JAN5725Vacuum Tube Amplifier100W x2BT, USB, DAC, COAX, OPT Comes with Power SupplyBoxed - Unused

AIYIMA T9 Bluetooth 5.0 6K4 Vacuum Tube Amplifier 2.0 Channel TPA3221 USB DAC 10. I’ve used this only a handful of times in the two or three months I’ve owned it. Selling on now as I don’t use it often enough. In perfect, as new, condition. In its box with all original accessories included. PLEASE NOTE: the Aiyima T9 does not include a power supply. This will have to be purchased separately. From a smoke free environment.

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Vacuum Tube Preamp Mini Bluetooth Receiver Headphone Amp USB DAC APTX-HD Item description IMPORTANT NOTE: Turn ON position means Treble and Bass Control are invalid. Features Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music. The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/6*1n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound. Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music. Warm tips: 1. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. 2. USB input doesnt support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself). 3. This is a preamp but NOT a amplifier or a phono preamp, CANT be used for turntables or passive speakers. The main purpose of L200 is to act as a buffer to sweet the sound. Parameters Audio input: Bluetooth/USB/Stereo RCA Audio output: stereo L/R RCA / 3.5mm headphone jack Bluetooth version: 5.0 Bluetooth chip: QCC3034 (support SBC/AAC/APTX/APTX-HD) USB input sampling rate: 16/24bit 44.1-48KHz USB input supported system: Win XP/7/8/10/MAC/Linux / phone OTG Matched headphone impedance: 16-300Ω Output power of headphone jack: 268mW@16Ω Treble & Bass range: ±10dB Frequency response: 20Hz~25KHz (±3dB) Distortion: 0.1% S/N Ratio: >98dB RCA out level: 2V Working voltage: DC 12V/above 2A (5.5mm/2.5mm) Dimensions(W*D*H): 131*139*71mm / 5.16*5.47*2.80in Net weight: 550g / 1.21lb Package weight: 800g / 1.76lb Packing List 1*L200 Tube Preamp 1*DC 12V Power Adapter 1*User Manual Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

arious audio input: can be connect to PC directly as a high-grade USB external sound card, and can be wired to CD player, lossless audio source? and can wirelessly connect to smart phone by Bluetooth, very convenient. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Stereo Bluetooth 5.0 Preamplifier Vacuum Tube Preamp Mini USB DAC Adapter Item description Notice: 1.The vacuum tube needs 5-7 seconds to warm up. 2.Choose audio input by hand. Clockwise rotation to switch different kinds of input signal, the order is Bluetooth→USB-PC→AUX Features Various audio input: can be connect to PC directly as a high-grade USB external sound card, and can be wired to CD player, lossless audio source? and can wirelessly connect to smart phone by Bluetooth, very convenient. Excellent sound quality: using classic 6N3 tube, warm and charming tone, very balanced, clear and delicate sound, dynamically With Treble and Bass Function: users can adjust freely according to different parameters of their own speaker device to achieve ideal HiFi sound quality. High-end Material: Bluetooth 5.0 module using QCC3003 chip supporting A2DP, AVRCP, HFP, AAC, 12S and so on. 16M SPI FLASH storage chip, lossless decoding transmission with farther distance, more stable speed.Bluetooth decoding using the latest US ES9023, Hyperstream architecture and time-domain jitter cancellation technology enable jitter-free recording quality with a dynamic range of 112 decibels. USB sound card using BB PCM2704, the sound quality output is warm and the sound field is open. Parameters Audio Input: USB-PC / 3.5mm Stereo / Wireless Bluetooth 5.0 Audio Output: RCA Power Supply: DC 12V (adapter is equipped and global universal) Bluetooth Chip: QCC3003+ES9023 USB Chip: US BB PCM2704 PCM2704 Parameters Distortion: THD + N: 0.006% (RL > 10kΩ) Distortion: THD + N: 0.025% (RL = 32Ω) SNR: 99 decibels Dynamic range: 99 dB Support sampling rate: 16Bit 32k, 44.1k, 48k Dimensions: 138*116*32mm Packing List 1* HiFi Preamp 1* Power Supply 2* 6N3 Tube 1* Bluetooth Antenna 1* USB Cable Common reasons for background noise: 1. Audio cables are with poor quality. 2. Audio source. If the source itself has noise, the pre-amplifier will amplify its noise. 3. The tube is not plugged into the base correctly. Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

Description??All items are shown in the pictures. ??If you cannot tell from the pictures please contact us. ??The voltage of some electrical products may be different. ??Please make sure to check before purchasing.Payment Please pay within 3 days of winning the auction. If payment cannot be confirmed the order may be cancelled.Shipping There have been delays in delivery due to the global pandemic. There may be a significant delay in the scheduled delivery date. Delivery Time *Economy delivery? *3 to 4 weeks (Tracking numbers are not reflected in Australia Canada and some regions.) *Standard delivery *2 to 3 weeks Terms of Sale If payment is not confirmed within 3 days of purchase the order will be cancelled. Returns are accepted within 60 days.International Buyers - Please Note: ??Import duties and taxes are not included in the item price or shipping cost. ??Please check with your countrys customs office for additional costs before bidding or purchasing. ??Duties and taxes are not collected by the shipping company. Please check with your countrys customs office for additional costs before bidding or purchasing. ??The act of declaring goods at a lower value or declaring goods as gifts is prohibited by international governments. Shipping discounts are available for multiple purchases.We now accept more than just PayPal!??Condition? MINT

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Vacuum Tube Preamp Mini Bluetooth Receiver Headphone Amp USB DAC APTX-HD Item description IMPORTANT NOTE: Turn ON position means Treble and Bass Control are invalid. Features Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music. The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/6*1n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound. Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music. Warm tips: 1. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. 2. USB input doesnt support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself). 3. This is a preamp but NOT a amplifier or a phono preamp, CANT be used for turntables or passive speakers. The main purpose of L200 is to act as a buffer to sweet the sound. Parameters Audio input: Bluetooth/USB/Stereo RCA Audio output: stereo L/R RCA / 3.5mm headphone jack Bluetooth version: 5.0 Bluetooth chip: QCC3034 (support SBC/AAC/APTX/APTX-HD) USB input sampling rate: 16/24bit 44.1-48KHz USB input supported system: Win XP/7/8/10/MAC/Linux / phone OTG Matched headphone impedance: 16-300Ω Output power of headphone jack: 268mW@16Ω Treble & Bass range: ±10dB Frequency response: 20Hz~25KHz (±3dB) Distortion: 0.1% S/N Ratio: >98dB RCA out level: 2V Working voltage: DC 12V/above 2A (5.5mm/2.5mm) Dimensions(W*D*H): 131*139*71mm / 5.16*5.47*2.80in Net weight: 550g / 1.21lb Package weight: 800g / 1.76lb Packing List 1*L200 Tube Preamp 1*DC 12V Power Adapter 1*User Manual Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Vacuum Tube Preamp Mini Bluetooth Receiver Headphone Amp USB DAC APTX-HD Item description IMPORTANT NOTE: Turn ON position means Treble and Bass Control are invalid. Features Multiple inputs and outputs for different purposes: Bluetooth / USB(plug-and-play) / RCA inputs and RCA / 3.5mm headphone jack outputs, L200 can be used as atube Preamp, a USB DAC or a headphone amp to satisfy different requirements of home stereo system. High-end components are used to ensure perfect performance and long time stable work: QCC3034 Bluetooth chip, supports APTX/APTX-HD, lossless transmission with no delay. PCM5102A independent decoding chip, stronger decoding ability to get clearer sound. 2PCS NE5532 op amps, integrate pre-amplification and tone control, make sound full and mellow. Vacuum tube design for better sound: improve everything detail, transparency, immediacy, richness, tone associated with your music. The sound is natural and delicate, warm and soft, dynamic and pleasing. 6J5 can also be replaced to 6J1/6J4/GE5654/6AK5/6*1n according to personal preference. Separate control of Treble & Bass: can independently adjust the bass and the specific proportion components in high-frequency sound to perfectly achieve HiFi effects. And with a bypass switch to turn on/off the tone control, more convenient to enjoy original sound. Exquisite appearance with proper size looks cool and attractive, perfect functions and powerful performance bring wonderful auditory and visual enjoyment, very suitable for audiophiles who purue HiFi music. Warm tips: 1. Bluetooth input is prior to USB input, if you want USB input please make sure Bluetooth input is disconnected. 2. USB input doesnt support U-disk or Hard-disk, can connect USB interface of computer or mobile phones (Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself). 3. This is a preamp but NOT a amplifier or a phono preamp, CANT be used for turntables or passive speakers. The main purpose of L200 is to act as a buffer to sweet the sound. Parameters Audio input: Bluetooth/USB/Stereo RCA Audio output: stereo L/R RCA / 3.5mm headphone jack Bluetooth version: 5.0 Bluetooth chip: QCC3034 (support SBC/AAC/APTX/APTX-HD) USB input sampling rate: 16/24bit 44.1-48KHz USB input supported system: Win XP/7/8/10/MAC/Linux / phone OTG Matched headphone impedance: 16-300Ω Output power of headphone jack: 268mW@16Ω Treble & Bass range: ±10dB Frequency response: 20Hz~25KHz (±3dB) Distortion: 0.1% S/N Ratio: >98dB RCA out level: 2V Working voltage: DC 12V/above 2A (5.5mm/2.5mm) Dimensions(W*D*H): 131*139*71mm / 5.16*5.47*2.80in Net weight: 550g / 1.21lb Package weight: 800g / 1.76lb Packing List 1*L200 Tube Preamp 1*DC 12V Power Adapter 1*User Manual Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us

Tubes light up great. See photos for contents and condition. Includes Power and usb cable.

arious audio input: can be connect to PC directly as a high-grade USB external sound card, and can be wired to CD player, lossless audio source? and can wirelessly connect to smart phone by Bluetooth, very convenient. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! HiFi Stereo Bluetooth 5.0 Preamplifier Vacuum Tube Preamp Mini USB DAC Adapter Item description Notice: 1.The vacuum tube needs 5-7 seconds to warm up. 2.Choose audio input by hand. Clockwise rotation to switch different kinds of input signal, the order is Bluetooth→USB-PC→AUX Features Various audio input: can be connect to PC directly as a high-grade USB external sound card, and can be wired to CD player, lossless audio source? and can wirelessly connect to smart phone by Bluetooth, very convenient. Excellent sound quality: using classic 6N3 tube, warm and charming tone, very balanced, clear and delicate sound, dynamically With Treble and Bass Function: users can adjust freely according to different parameters of their own speaker device to achieve ideal HiFi sound quality. High-end Material: Bluetooth 5.0 module using QCC3003 chip supporting A2DP, AVRCP, HFP, AAC, 12S and so on. 16M SPI FLASH storage chip, lossless decoding transmission with farther distance, more stable speed.Bluetooth decoding using the latest US ES9023, Hyperstream architecture and time-domain jitter cancellation technology enable jitter-free recording quality with a dynamic range of 112 decibels. USB sound card using BB PCM2704, the sound quality output is warm and the sound field is open. Parameters Audio Input: USB-PC / 3.5mm Stereo / Wireless Bluetooth 5.0 Audio Output: RCA Power Supply: DC 12V (adapter is equipped and global universal) Bluetooth Chip: QCC3003+ES9023 USB Chip: US BB PCM2704 PCM2704 Parameters Distortion: THD + N: 0.006% (RL > 10kΩ) Distortion: THD + N: 0.025% (RL = 32Ω) SNR: 99 decibels Dynamic range: 99 dB Support sampling rate: 16Bit 32k, 44.1k, 48k Dimensions: 138*116*32mm Packing List 1* HiFi Preamp 1* Power Supply 2* 6N3 Tube 1* Bluetooth Antenna 1* USB Cable Common reasons for background noise: 1. Audio cables are with poor quality. 2. Audio source. If the source itself has noise, the pre-amplifier will amplify its noise. 3. The tube is not plugged into the base correctly. Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please dont hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please dont leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us