Potting output transformer to ensure the stability and reliability of the output. The output transformer is made of new 0.35 iron core, high-purity pure copper enameled wire, layered segmentation, and serial connection method. 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 ! Defective--HiFi EL34 Valve Tube Amplifier Class A Single-ended Audio Amp 24W Item description Want to buy it now please click: LINK This product is located in UK, 1-3 bz days reach Most United Kingdom regions, and 2-8 bz days reach Most European countries. Features Pure class A single-ended circuit design: inspired by many classic circuits, adopts 2PCS 6N2 triode for voltage amplification, 2PCS EL34 for single-ended amplification; and 5Z4PJ for rectification (315V+315V). The single-ended circuit output power can reach 12W+12W and has good control of the speakers. Enough power and HIFI tube sound: with 200W power transformers and 15W audio output transformers with no large loop feedback; the sound quality is pure and warm, full and mellow, sweet and natural; medium frequency is full and stable, high frequency is clear and delicate. Attractive appearance and high-quality technology: with volume control and input switch, easy to use; exquisite silver lacquered panel and vacuum tube with artistic and retro feelings, providing wonderful auditory and visual enjoyment, very suitable for home and desktop audio system use. High-quality components are used to ensure working performance: Power transformer uses 96-50 iron core, 0.35mm silicon steel sheet and oxygen-free copper enameled wire. The power can be up to 200W, with low no-load current. Output transformer uses 0.35mm iron core, Japan ultra-thin insulating paper (0.06MM thick, withstand voltage 2000V), with layered and segmented fine winding method. Classical series input and parallel output can ensure high inductance and low leakage performance, the sound more excellent. Japan ELNA and RUBYCON audio capacitors are used for filtering and Dutch Philips capacitors to couple the signal. Japan ALPS potentiometer, gold-plated pure copper terminal, Taiwan customized non-inductance resistor etc. Warm tips? Because of the scarcity of vacuum tubes, the model of tubes may be different in different batches. Parameters Model: A10 Audio input: 2 groups of stereo RCA Audio output: banana speakers Jack Tubes: EL34+6N2+5Z4PJ Output power: 12W×2 Frequency response: 20Hz-28kHz Output impedance: 4Ω / 8Ω Input sensitivity: 750mV Input impedance: 100KΩ THD: ≤1%(1kHz) Input Voltage: AC 100-110V / 220V-240V (50-60Hz) Dimensions: 315*258*163mm / 12.40*10.16*6.42in Net weight: 12kg / 26.46lb Packing List 1* Tube Amplifier 1* Power Cord 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

AS FOUND, FROM RETIRED RADIO ENGINEERS WORKSHOP CLEARANCE.APPEAR UNUSED, HEATERS CHECKED OK FOR CONTINUITY,OTHERWISE NOT TESTED.Postage 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.

RCA 6GM6 Audio Electronic Vintage Radio TV Valve HAM Vacuum NOS Tube.

RCA 6EW6 Audio Electronic Vintage Radio TV Valve HAM Vacuum NOS Tube.

New in Box -- New in Box - No SP5GT Sylvania NOS Hanging Filament Radio Audio Vacuum Tube Valve -- See all pics for the Sylvania Radio Tube sold in this auction -- Payment Due at Auction End --

New in Box -- New in Box - No 7A5 Sylvania NOS Hanging Filament Radio Audio Vacuum Tube Valve -- See all pics for the Sylvania Radio Tube sold in this auction -- Payment Due at Auction End --

New in Box -- New in Box - No 7B5 Sylvania NOS Hanging Filament Radio Audio Vacuum Tube Valve -- See all pics for the Sylvania Radio Tube sold in this auction -- Payment Due at Auction End --

New in Box -- New in Box - No 12SG7 Sylvania NOS Hanging Filament Radio Audio Vacuum Tube Valve -- See all pics for the Sylvania Radio Tube sold in this auction -- Payment Due at Auction End --

New in Box -- New in Box - No 14F7 Sylvania NOS Hanging Filament Radio Audio Vacuum Tube Valve -- See all pics for the Sylvania Radio Tube sold in this auction -- Payment Due at Auction End --

One (1) No 6C6 Kadette vintage vacuum tube, ST shape, made in USA, tube has metal ribbed plates, clear top, smoked glass, mica snubbers, printed base, tube tests: 72 % 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

HAVING A CLEAR OUT MAY BE OF USE TO SOMEONE,THIS IS FOR A 30PL13,PCL800,16GK8, VALVE TUBE TESTED. SAME PIN OUT AS PCL82TRIODE BEAM TETRODE, 16 VOLT 300MA HEATER.WOULD MAKE A QUITE A NICE VALVE AMPLIFIER. TRIODE SECTION SIMILAR TO 6/30L2, ECC82. ALWAYS HAPPY TO COMBINE POSTAL COSTS.

Four (4) 6V6GT RCA vintage vacuum tubes, made in USA, all are black ribbed plates, clear top, smoked glass, tubes tests: 76, 80, 80, 76% 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.

Two (2) 6AQ5A Motorola by Sylvania vintage vacuum tubes, made in USA, all are grey smooth plates, top O getter, tubes tests: 88, 88 %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.

Vintage Valve Tube Cossor DDT4. Double Diode Triode for audio frequency use. Heaters shown working with voltage and current draw. Function tested before removal. Will be carefully protected and packed for delivery. Sent 48 hour tracked and signed for.

Ingressi audio multipli per diverse esigenze: supporta connessioni Bluetooth 5.0/USB (U-disk)/stereo RCA, perfettamente abbinate con telefoni, TV, tablet, proiettori, computer, ecc., supporta U-disk per riprodurre formati APE/FLAC/WAV/WMA senza interruzioni in entrambi i formati MP3; migliora notevolmente la qualità del suono per il vostro Amplificatore o attivo. Speaker.Suono caldo HIFI e design del tubo sostituibile: il tubo 6A2 predefinito per filtrare le sensazioni digitali e ammorbidire il suono per essere caldo e dolce, pieno e colorato con grande dinamica; design del tubo pluggable può essere aggiornato a 6 x 1N / JAN5725W / 6AK5 / EF95 per la forma del tubo. Rolling and Enjoy Diversi stili di suono.Controllo del suono e interruttore di ingresso: una manopola di controllo del volume principale, anche con manopola indipendente e bassi per presentare una musica fantastica con alti e bassi profondi. Con selettore di ingresso e indicatore LED, facile da commutare canale di ingresso e mostra il suo stato di lavoro, non è necessario collegare cavi again e again.Dimensioni compatte e aspetto attraente: telaio in lega di alluminio nero lavorato a CNC, robusto e durevole; decorato con luce arancione calda dal look vintage tubolare, offre diversi effetti acustici anche in uno spazio limitato, molto adatto per gli audiofili che hanno un aspetto meraviglioso e piacevole.

  TUBE HUNTER VACUUM TUBE GEMS THESE ARE THE SPECIFICS OF THE TUBE/TUBES FOR SALE THESE ARE THE TUBE/TUBES FOR SALE:  MANUFACTURER:                               AMPEREX PRODUCTION CITY:                                     HERLEEN TUBE TYPE:    6AS5 DESIGNATION:                                             AUDIO OUTPUT TUBE YEAR:    1970 MONTH:    WEEK 48 Date code match    YES SILK SCREEN CONDITION %:                    100% MICA:    2 PLATES:   GREY GM %:     120% SINGLE/PAIR/QUAD/MULTI:     SINGLE GETTER:                                                          0 GETTER DATE CODE                                                    70-48   This auction is for ONE tube. Comes in a original Amperex box. Normal 0 false false false EN-US X-NONE X-NONE On my tester a B&K 747 tester:    Below 55 = BAD      55-65 = ?     65 -100 = Good     100-120+ = NOS     I want to see you happy with your purchase. I will never sell a tube that is below standard…… I have sold many tubes here on Ebay, and all my customers have been completely satisfied. I will work with you in good faith if there are any problems, or if you are unsatisfied in any way. I want your business now and in the future, so I assume you are the boss, and I am the employee. All tubes are tested for shorts, continuity, and emissions. I prefer PayPal. ALL CUSTOMERS PLEASE READ ALL NOTES BEFORE BUYING FROM ME !!1.  RETURNS: It is my highest desire that you are completely satisfied with your purchase from me. I will bend over backwards to make sure that you are a happy customer.If anything you buy from me is less than satisfactory, message me BEFORE you either open a case or hit the “item not as described” button.If you want a return for any reason, I will give you back 100% of your purchase and any shipping you paid.2.    PLEASE NOTE:  Tube silkscreen (lettering on the tubes) is VERY fragile. It can be wiped off and destroyed VERY easily. If you wipe off the silkscreen while handling the tube you diminish their value by up to 70%. DO NOT handle the tubes or hold them from the cylinder. ALWAYS hold them from the ENDS. If you are returning tubes and they are not in the same condition cosmetically I cannot give you a full refund. THIS IS VERY IMPORTANT.3.  UNLESS YOU MAKE ARRANGEMENTS WITH US BEFORE YOU PURCHASE, YOU MUST PAY FOR ITEMS PURCHASED WITHIN 2 DAYS OR A CASE WILL BE OPENED FOR AN UNPAID ITEM!!!4.    Please note: The numbers given for gm are what I see on my tester. I DO NOT guarantee that you will see those numbers on your tester. I only guarantee that these tubes will test good, with no shorts, or gas, on a decent calibrated tester. I dont guarantee or imply anything else.5. VERY IMPORTANT!!! Vintage tube testers almost always, due to age, have VERY LOW HEATER VOLTAGES!!!  Every tester I have ever bought is below 6 volts when selecting 6.3 volts. They average 5.8 volts. The voltage NEEDS to be 6.3 and 12.6. You can calibrate a vintage tube tester all you want. If the heater voltage is not right, you will NEVER get the right gm value. I have customers complain that their tubes are not the same as what I see on my tester. They say they have a calibrated tube tester. I have 40 tube testers. On all of them I have an outside regulated DC power supply that feeds the tube tester the correct heater voltage. International customers note:1. Please wait for us to invoice you for the correct amount. If you have purchased more than one item, we must calculate how much the shipping will be. Shipping will be HIGHER due to insurance and shipping methods needed for expensive item totals. If you are buying only one item this will not be an issue. 2. Under no circumstances will we state on a US customs a declared value of less than the sale price. This is an honesty issue. We are honest with everyone to the best of our ability to do so. We want you to trust that what we say is true. There cannot be that trust, if we make false statements knowingly to anyone. If your country has tariffs/taxes so high that they cause large numbers of normally honest folks to make false statements, we urge you to work for change of those laws.3 International buyers if you bought more than one item and want combined shipping it will ship in 2 days.4. B&K image  And all the Angels sang because the heavenly music was playing and it was turned all the way up.    Listing and template services provided by inkFrog

One (1) type NX-280 National Union Globe shape, vintage vacuum tube, made in USA, tube has black ribbed hanging plates, engraved base, bottom side foil getter, tube tests: 76, 82 % Tube did not have original box, I assume it as used. Base has been fixed with glue. 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