tested. working okCopy paste from manufacturerIntroduction Douk Audio X1 tube power amplifier is the fully upgrading version in all aspects, using GE5654 vacuum tube to impove the sound quality, TDA7498E amp IC that can max output 160W+160W to drive all home speakers, integrating the function of phono preamp and amplifier to support MM phono turntables input, and adding a low frequency output that can connect active subwoofer to build 2.1 channel audio system.FeaturesBluetooth 5.0 & Stereo RCA & MM Phono inputs: MM phono input, converts phono signal to line level signal and amplify it, with low-noise integrated circuits and high-quality components to ensure clear and clean sound.3.5mm AUX input, amplify the low level audio signal from your phone, tablet, MP3 etc. and provide enough output power for passive speaker, greatly improve the sound quality.JAN5654 vacuum tube & HiFi Sound: default with JAN5654 tubes, improves everything associated with your music such as detail, transparency, immediacy, richness, dynamic, tone etc., much better than 6J1 series especially in human voice. Pluggable tube socket for tube rolling and sound-shaping, easy to pick from and alter the sound signature to ones preference. Super large output power & low frequency output: adopting TDA7498E amp IC whose max output power can reach 160W+160W(4?), and equipped with 32V/5A power supply, easily to drive most home passive speakers. And adding subwoofer output, convenient to connect active subwoofer and build 2.1 stereo audio system. Perfect Design & Powerful function: with tone control, easy to get more smooth and delicate sound by adjusting treble and bass knob, and bypass function is added to enjoy original sound. A bassboost switch is specially designed to greatly enhance bass effects, the shocking auditory effects make you feel like in the cinema. Mature Circuit & HiFi Components: Double PCB design, perfectly integrated the MM phono circuit. Reasonable and concise layout, less wiring and less noise.Adopting QCC3034 Bluetooth chip, with strong compatibility and supports APTX and APTX-HD lossless transmission. NE5532 op amp responsible for pre-amplification and tone control, with excellent dynamic, rich details and wide sound field. Customized whole aluminum alloy case with good heat dissipation, and use Simens capacitors, NEC relay, red loop inductance, pure copper gold-plated terminas etc.Exquisite Appearance & Proper Size: metal black case and vacuum tube with blue and orange decorating light looks fashionable and attractive, designed input switch / bass and tone pass & bypass switch, very convenient to use and suitable for stereo home and desktop audio system. ParametersAudio input: Bluetooth 5.0 / stereo L/R RCA / MM Phono & TurntablesAudio output: banana speaker jacks / Low frequency output (connect active subwoofer)Bluetooth chip: QCC3034 (support APTX / APTX-HD)Amp IC: TDA7498EOp amp: NE5532Max output power: 160W+160W(4? load)Speaker impedance: 4-8?Frequency response: 20Hz-20KHz(±3dB)SNR: >90dBTHD: 0.5%Input sensitivity: 0.775VTreble and Bass range: ±6dBWorking voltage: DC 19V-35VDimensions(W*D*H): 115*166*60mm / 4.53*6.54*2.36inPackage dimensions(W*D*H): 320*280*80mm / 12.60*11.02*3.15inNet weight: 782g / 1.72lbPackage weight: 1400g / 3.09lb

One (1) type No 35 51 Zenith vintage vacuum tube, ST shape, made in USA, tube has mesh plates, clear top, bottom side foil getter, printed base, tube tests: 68 % Tube did not have original box, I assume it as used. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tested on Triplett tube tester for shorts and leaks as well. Scale 1-100, good quality percentage on my Triplett starts at 54. Normal 0 false false false EN-US X-NONE X-NONE

One (1) 6BL7GTA GE vintage vacuum tube, made in USA, tube has black ribbed plate, top O getter, tube tests: 82, 86 % Price is for all tubes pictured. Tube did not have original box, I assume it as used. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tubes are tested for emission, as well as for shorts, life test and grid leakage on calibrated Sencore Mighty Mite tube tester, on scale 1-120, good quality on my Sencore starts at 70.

EL12-375 NOS Röhre-Tube-Valve Ua max. 375V, vintage Audio Tube. Die Röhre ist augenscheinlich neu ,Sie befindet sich in Originalverpackung Siehe Bilder Ich verkaufe die Röhre dennoch ausdrücklich als ungetestet Und auf Grund des Alters ohne Garantie auf Funktion und schließe einen Umtausch aus. Für Versand außerhalb der EU erfragen Sie bitte die Versandkosten

VINTAGE Tungsol 5881 6L6GB AUDIO Valve/Tube 6L6 tested strong Tested on a recently calibrated AVO VCM 160 with the following results; IA GMValve 1: A1 45.4 4.4 AVO NOS Specs: IA = 54.0 GM = 5.2 *Note: Spigot missing, this has no impact on sonic performance, but care must be taken when installing. No leaks or shorts, solid base, shiny pins. eBay seller for over 20 years, buy with confidence - see feedback. Valve will be shipped next day, carefully packaged, tracked and insured. Please drop a note with any questions. Shipping happily combined on multiple items. For overseas purchases, please message for shipping quote before purchasing.

Two (2) 6V6GT VT-107A JAN Raytheon vintage vacuum tubes, made in USA, all are black ribbed plates, clear top, black glass, bottom side square getter, tubes tests: 86, 90 % Price is for all tubes pictured. We test all tubes we sell! We will combine shipping! Check out my other tubes!Scale 1-100, good quality percentage on my Triplett starts at 54.

.FROM A SMOKE FREE HOME .HAVE YOU MISSED THIS EDITION ? WORLD HI-FI & MUSIC REVIEWS SEE ALL REVIEWS ABOVE EXTRA THICK EDITION WITH SO MANY AWARD REVIEWS HI-FI WORLD - NAIM NDX2 NETWORK PLAYER - ICON AUDIO STEREO 40 MKIV VALVE AMP

Removing from old storage we found lot of early tube. (1) EM81/ 6DA5 Magic Eye Tube.. Old stock. NOS. Details can be seen from All Enlarged images. Rare find.

Two (2) 50L6GT GE vintage vacuum tubes, made in USA, all are black ribbed plates, top O and square getter, tubes tests: 100, 100 % Price is for all tubes pictured. We test all tubes we sell! We will combine shipping! Check out my other tubes!Scale 1-100, good quality percentage on my Triplett starts at 54.

Mullard PM2B Vacuum Tube Valve Audio Output. Boxed. Will be carefully packed for delivery.

el3n we15 el3 valvola di potenza Tungsram tube audio valve vintage amplificatore 1 valvola EL3N Tungstam produzione Ungherese testata su prova valvole Funke W19S = 32mA (riferimento buona a 15mA) forte emissione LA VALVOLA VIENE VENDUTA COME TESTATA SENZA LA SCATOLA ORIGINALE, BASE NERA, guide in rame Tipo: Pentodo a vuoto Power/Output EL3N = MEL3 = WE15 = UEL3 = 6E6_Ultron Zoccolo Europe side contact P8A Filamento Vf 6.3 Volt / If 0.9 Ampere / Indirect utile ricambio originale per radio depoca a valvole e amplificatori vintage la scritta a vetro non risulta leggibile , vedere foto box 178

Two (2) 6F7 RCA vintage vacuum tubes, ST shape, made in USA, tubes have mesh plates, clear top, mica snubbers, printed base, bottom side foil getters, tube tests: 74, 78 %80, 84 % Price is for all tubes pictured. Tube did not have original box, I assume it as used. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tested on Triplett tube tester for shorts and leaks as well. Scale 1-100, good quality percentage on my Triplett starts at 54. Normal 0 false false false EN-US X-NONE X-NONE

One (1) type No 85 National Union vintage vacuum tube, ST shape, made in USA, tube has black smooth plates, clear top, mica snubbers, bottom side foil getter, engraved base, smoked glass, tube tests: 94, 84, 84 % Tube did not have original box, I assume it as used. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tested on Triplett tube tester for shorts and leaks as well. Scale 1-100, good quality percentage on my Triplett starts at 54. Normal 0 false false false EN-US X-NONE X-NONE

Audio Research Ref 150m Valve Power Amplifier boxed, in excellent pre-owned external condition and full working order. Audio Research Ref 150 Valve Power Amplifier 35kg of American Power Boxed, in excellent pre-owned external condition and full working order. Where applicable, each piece of kit is fully tested here in our London franchise before dispatch, so in the unlikely event that your item arrives and is not working, please do not hesitate to contact us.   Get images that make Supersized seem small. THE simple solution for eBay sellers.

Two (2) 50L6GT Sylvania vintage vacuum tubes, made in USA, all are black ribbed plates, clear top, smoked glass, tubes tests: 90, 96 % Price is for all tubes pictured. We test all tubes we sell! We will combine shipping! Check out my other tubes!Scale 1-100, good quality percentage on my Triplett starts at 54.

One (1) 6KD6 RCA vintage vacuum tube, made in USA, tube has gray ribbed plates, clear top, side O double getters, tube tests: 98 % Price is for all tubes pictured. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tubes are tested for emission, as well as for shorts, life test and grid leakage on calibrated Sencore Mighty Mite tube tester, on scale 1-120, good quality on my Sencore starts at 70. Normal 0 false false false EN-US X-NONE X-NONE

Raytheon JRP-5654. Also known as 6AK5W. RF amplifier pentode. It is also suitable for audio use as a direct plug in replacement for the 6J1 valve and gives far superior performance when used for this. Will be carefully protected and packed for delivery.

One (1) No type 6P5G Super Silvertone vintage vacuum tube, ST shape, made in USA, tube has black smooth plates, clear top, bottom side foil getter, printed base, tube tests: 74 % Tube did not have original box, I assume it as used. We test all tubes we sell! We will combine shipping! Check out my other tubes! Tested on Triplett tube tester for shorts and leaks as well. Scale 1-100, good quality percentage on my Triplett starts at 54. Normal 0 false false false EN-US X-NONE X-NONE

AS FOUND, FROM RETIRED RADIO ENGINEERS WORKSHOP CLEARANCEHEATER CONTINUITY OK, OTHERWISE NOT TESTEDPostage and packing UK £5, in EU 14 GBP, 22 GBP Worldwide This includes Tracking I will always combine postage on multiple items where possibleAll buyers are encouraged to pay via Paypal. The description is as accurate as possible and packaging is always sufficient, see my feedback for evidence. However there may be the occasion when problems arise, in which case if the buyer is not happy with the purchase every effort will be made to resolve the dissatisfaction. Typical feed back:- You know a really great seller when things go wrong and he takes care of it.

KT61 Osram BVA Made in England. Audio output valve. Fully AVO tested good, including for gas and inter-electrode shorts. AVO data for an average new valve is Ia= 40 mA gm= 10.5 mA/V. The test results for this valve are Ia=40mA gm=11.5mA/V So it tests like a new valve. It will be packed in a strong cardboard box with plenty of protection.

Job Lot 4 x ECC81 / 12AT7 ( Mullard, Brimar, Mazda ) valves and 1 off x ECC82 / 12 AU7 ( Brimar) double triode valves , used but test excellent HI FI AUDIO HAM RADIOPlease look at the photographs - test results included

Unique and amazing combination: integrated ST-01/ST-01 PRO amplifier with VU meter into whole in such a mini size, the pointer dancing in the warm light with strong vintage feelings when enjoy HiFi music, 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. Also with treble and bass knobs to adjust ones own preferable sound styles, presents HiFi music with rousing highs and deep lows. Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Add-on Items Nobsound & Douk Audio UK Warehouse EU Warehouse AU Warehouse Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier Audio Adapter / Converter Audio Splitter / Switcher Audio Processor Music Spectrum & Clock Audio Player Record Player & Turntable Part Empty Chassis Power Supply Audio Cable Hi-Fi Speaker Valve Tube Transformer Radio Communication Module Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Add-on Items Nobsound & Douk Audio UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier Audio Adapter / Converter Audio Splitter & Switcher Audio Processor Music Spectrum & Clock Audio Board & DIY Kit Audio Player & Turntable Parts Radio Communication Audio Accessories Other EU Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier Audio Adapter / Converter Audio Splitter & Switcher Audio Processor Music Spectrum & Clock Empty Chassis Audio Board & DIY Kit Record Player & Turntable Part Radio Communication Audio Accessories Other AU Warehouse Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Hybrid Amplifier Mini Tube Amplifier DIY Amplifier Kit Hi-Fi Amplifier Mini Amplifier Power Amplifier Integrated Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Phono Preamp Digital Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Portable Headphone Amp Tube Headphone Amp Desktop Headphone Amp Audio Board & DIY Kit Audio Adapter / Converter USB DAC Audio Adapter Digital Interface Bluetooth Receiver/Transmitter 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 Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Audio Player Digital Player CD Player Portable Player Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Platter Mats Disc Storage Rack Stylus & Headshell Gauge Devices Cleaning Kit Other Empty Chassis Personalized Small-sized Medium-sized Large-sized Power Supply Switching Power Supply Linear Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Audio Cable Speaker Cable RCA Audio Cable Conversion Cable USB Cable Coaxial Cable Optical Fiber Cable HDMI Cable Dock Cable Other Hi-Fi Speaker Frequency Divider Finished Speaker Valve Tube Shuguang Tube PSVANE Tube Tube Socket Other Transformer Toroidal transformer Output Transformer Choke Other Radio Communication Tesla Coil FM Transmitter & Receiver Antennas & Tuners Shortwave Radios Parts & Accessories Signal Generator Other Module Amplifier Module Phase-locked Loop Module Power Module Signal Generator module Other Module Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Current Meter Noise Tester Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! Mini Bluetooth 5.0 Valve Tube Amplifier VU Meter USB DAC Digital Audio Amp 200W Item description Shipping from UK, 1-3 days to most UK regions. Warm tips: In addition to retaining all the original functions, ST-01 PRO is the latest upgraded version of ST-01: 1. Add a M1 button on the remote control of ST-01 and ST-01 PRO, to turn on and off the function that it will auto enter mute mode when there is no signal input for 10S. 2. ST-01 PRO supports U-disk input to play lossless formats music. 3. Add sensitivity adjustment of VU meter on its bottom, easy to set and match better with different input signals. 4. Add three decorative golden circles around tubes and VU meter, looks more exquisite and luxury. Features Unique and amazing combination: integrated ST-01/ST-01 PRO amplifier with VU meter into whole in such a mini size, the pointer dancing in the warm light with strong vintage feelings when enjoy HiFi music, 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. Also with treble and bass knobs to adjust ones own preferable sound styles, presents HiFi music with rousing highs and deep lows. Strong output power and special AUX output: use TIs classic power amp IC, each channel can output 100W(4Ω) and easily to drive all 3-8Ω passive speakers, adds 3.5mm AUX output easy to connect another amplifier or active speaker / subwoofer to build multiple channel system and enjoy wonderful home theater experience. 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. Practical functions to simplify use: with full-function remote control, all settings can be achieved from the distance; with input selection and indicators, clearly to show the working status in real time; aluminum alloy case is specially designed, cool and unique to decorate your desktop space. Warm tips: 1. PC-USB input also supports mobile phones that with OTG functions, but Android system needs OTG cable and IOS system needs camera kit, please prepare by yourself. 2. Pluggable tube socket, default 6K4 vacuum tubes, can be replaced by 6J1, 6J2, 6J3, 6J4, 6J5, 61N, 6*4N, 6*5N, 5654/5654W, 5725, 6AK5, EF95, 6BA6, 403B, etc. 3. When the volume is turned down to minimum, the BT/(USB) indicator will be flashing; and when to maximum, the PC-USB indicator will be flashing; At this time, the indicator of current input channel will go out but light on when the adjustment is stopped. 4. Default comes with 24V/5A power adapter enough for common use, if you want higher power output to drive your speaker better, please click LINK to buy DC 36V/5A power adapter. Parameters Brand: Douk Audio Model: ST-01 PRO Audio input: Bluetooth / USB (PC-USB) / Coaxial / Optical / RCA / U-disk Audio output: Banana speaker jacks / 3.5mm AUX Max output power: 100W+100W (4Ω) Matched impedance: 3-8Ω Sampling rate supported: USB input: 96KHz/24Bit Bluetooth input: 48KHz/24Bit COAX/OPT inputs: 192KHz/24Bit Supported formats of U-disk: MP3 / WAV / WMA / FLAC / APE Max capacity of U-disk: 64G Treble / Bass adjustment range: ±6dB System PC-USB supported: XP/W7/W8/W10/MAC/ Linux Frequency response: 20Hz-20kHz(±1dB) S/N ratio: ≥98dB THD: 0.07% Working voltage: DC 18-30V Dimensions(W*D*H): 115*98*54mm / 4.53*3.86*2.13in Package dimensions(W*D*H): 295*225*85mm / 11.61*8.56*3.35in Net weight(ST-01): 634g / 1.40lb Net weight(ST-01 PRO): 661g / 1.46lb Package weight: 1.4kg / 3.09lb Packing List 1*ST-01 PRO Amplifier Payment Fast Shipping Return Policy About us Contact us Payment Safe and secure payment by PayPal. Fast Shipping The items are located in UK, and will be shipped within 1 working day, 2-3 working days to UK, 2-8 working days to most EU countries. Return Policy Free Return Within 30 DaysWe provide return with 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-Friday 09:00 AM - 18:00 AM New York(US)Sunday to Thursday08:00 PM - 05:00 AM London(UK) Monday-Friday 01:00 AM - 10:00 AM Paris(FR) Monday-Friday 02:00 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

Ferranti 6Q7G Vintage Valve Tube. Octal base. Will be carefully packed for delivery

RCA 12SF5. Audio triode. Octal base. Will be safely packed for delivery.