One (1) 6K6GT National Union vintage vacuum tube, made in USA, tube has black ribbed ribbed plate, black glass, clear top, tube tests: 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! 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.

* * * * * * * * * * *   GE 6BY8GT Audio Electronic Vintage Radio TV Valve HAM Vacuum NOS NIB Tube NOS NIB TESTED * * * * * * * ************************************************************************************************************ Listing and template services provided by inkFrog

Verkaufe meine Vor- und 2x Endstufen der Marke Audio Valve. Die Geräte waren immer in meinem Besitz und befinden sich im absoluten Originalzustand. Da ich sie die letzten Jahre so gut wie garnicht mehr benutzt habe und sie als Staubfänger wirklich zu schade sind biete ich sie hiermit zum Verkauf an. Alle drei Geräte sind voll funktionsfähig und weisen außer ein paar kleineren altersbedingten Gebrauchsspuren keinerlei größere Schäden auf. Bei Gebrauchsspuren hat natürlich jeder seine eigenen Vorstellungen, deshalb die Geräte einfach anschauen und für sich selbst entscheiden. Die Endstufen habe ich damals beim Hifi Studio EINS in Köln erworben und die Vorstufe kurz danach von Audio Valve direkt. Da mir ein Versand zu heikel ist kommt hier nur die Abholung in Frage. Das Trio kann bei ernsthaftem Interesse selbstverständlich besichtigt und probe gehört werden.Es gibt nichts zu verbergen. Es handelt sich um einen Privatverkauf daher keine Garantie, Gewährleistung oder Rücknahme.

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.

filament & performance tested good, please see photo. Gas leakage also tested good. KT2 = CV1118 = 220OT = PT2 = 220HPT = ARP1 = PM22A = Power Pentode mu=2.4mA/V (spec=2.2 ) (2nd to top scale of the meter ) Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

filament & performance tested good, please see photo. Gas & cathode leakage also tested good. 6F6GT = CV731 = Power Pentode mu=1.8mA/V (spec=1.6 ) Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

As shown, please see images. mu=1.0mA/v (spec=0.9mA/V) 7 pin 210PG = FC2 = CV1043 = Octode Will try to combine postage for overseas buyers for valve auction items closing on the same day. (limit at 2kg shipment ). Please wait for invoice to arrive before paying. Typically there should be at least 50% reduction for postage on the second item. Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

filament tested, please see photo.New old stock 12Y4 = CV523 = Diode Rectifier Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

Mullard EBL1 pentode filament & performance tested good, please see photo. mu=6.5 mA/V (=100%) Gas & cathode also tested good Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

filament tested ok, please see photo. Sold on filament test only since I cant find a test sheet to do any further testing Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

filament & performance tested good, please see photo. Mazda HLDD1320 = CV3503 = Double Diode Triode Mutual conductance mu=2.4 mA/V (=110%)Both diodes also tested goodCathode & gas leakage good Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

As shown, please see images. 1950s BBC valve section 3 off A1820 = CV409 = Wideband video amplifier Tetrode Will try to combine postage for overseas buyers for valve auction items closing on the same day. (limit at 2kg shipment ). Please wait for invoice to arrive before paying. Typically there should be at least 50% reduction for postage on the second item. Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

General Electric (GE) 12SQ7 Twin Diode Triode Audio Frequency Amplifier Valve, Pre-Owned, AVO VCM MK4 tested strong > NOS spec. AVO 12SQ7 NOS Spec IA = .9 GM = 1.1 IA = .95 GM = 1.25 eBay seller for over 19 years, buy with confidence. Will be shipped next day, carefully packaged, tracked and insured.

filament & performance tested good, please see photo. VU111 = CV1111 = R11 = U27 = 10E/148 Rectifier 4 pin Will try to combine postage for overseas buyers for valve auction items closing on the same day. (limit at 2kg shipment ). Please wait for invoice to arrive before paying. Typically there should be at least 50% reduction for postage on the second item. Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

filament & performance tested good, please see photo. 202STH = TH2321 = TH21C = Triode Heptode mu=2.1 mA/V (1.9 spec) Gas & cathode leakage also test good Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

filament & performance tested good, please see photo. Gas & cathode leakage also tested good. 6V6GT = KT81 = CV885 = 7C5 = N148 = Beam Tetrode mu=4.5mA/V (spec=3.8 ) Will try to combine postage for overseas buyers for valve auction items closing on the same day. (limit at 2kg shipment ). Please wait for invoice to arrive before paying. Typically there should be at least 50% reduction for postage on the second item Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

gas & cathode leakage tested OK mu=2.6mA/V spec=2.5mA/V PEN220 = Pentode Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

Please see photo. 1 off tested as shown. (both diode sides) DD207 = Double Diode Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

Tests good with mu=1.7mA/V ( spec = 1.4mA/V). Gas leakage also good PM2 = 220P = CV1020 = Beam Power Will try to combine postage for overseas buyers for valve auction items closing on the same day. (limit at 2kg shipment ). Please wait for invoice to arrive before paying. Typically there should be at least 50% reduction for postage on the second item Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

World Audio Design K5881 Valve Amplifier with Spare Power Valve Set Good working order.The amp is the version with has ECC83 and 7025 signal valves.A few minor wear and tear marks as per photos and the power transformer cover has a small dent as shown in last photo. Included is a spare set (2 pairs) of Golded Dragon / Sovtek. Would prefer collection but can be shipped with UPS. Price reflects weight and insurance.

Trilogy Audio 903 valve Preamp In excellent, totally unmarked, condition!Please note, this is the standard non-phono stage version, which currently retails for £7500.Complete with user guide, original packaging, remote control and UK IEC mains cable. This is under a year old, and having now been bitten by the valve bug, I have now decided to upgrade further! Any questions, please don’t hesitate to ask. From the manufacturer’s website:- The Trilogy 903 combines peerless sound quality with impressive control flexibility. The optional integral phono stage makes this all the preamplifier you could ever need. The audio circuit benefits from Nic Poulsons years of experience in audio design, his pursuit of transparency and true fidelity leads to an elegant solution that reflects the passion of the designer. The control menu is accessed intuitively using the rotary encoder plus enter and escape buttons. The hierarchy is carefully designed to put all the commonly needed commands close to hand. Display brightness, customised labels and gain trims for each input, film mode, security bonding, sleep countdown, timed system switch on via TAS link, and remote operation are amongst the many configurable options available to personalise your 903 the way you want it. The gain stage uses the 6H6? super tube for all voltage gain. This Russian military triode has high transconductance and low mu for exceptional performance at audio frequencies. The grounded grid configuration allows the tube to operate in pure Class A with the highest linearity and the lowest distortion. The output impedance is low for excellent drive capability. Three transformers feed the power supplies. The valve’s high voltage supply is actively shunt regulated. This topology ensures that the regulator can sink as well as source current, a vital detail that enables the voltage rail to remain quiet and stable under all conditions, a vital requirement for high resolution audio. The optional phono stage is no marketing afterthought. It has much in common with the acclaimed 907, being a Class A design with passive RIAA EQ. The active circuit is fully discrete, the on board shunt regulators have their own power supply for maximum fidelity. Gain for either moving magnet or moving coil, cartridge resistance and capacitance loading, are all adjustable from the menu hierarchy via local or remote control via infrared handset or our powerful TAS link interface. The 903 is of rare quality, it offers both supreme flexibility and peerless construction. Above all, it is the sublime musical performance that will convince you of its rightful place; at the very heart of your music making. Specification - Size 465*312*106(W*D*H) Size including connectors 465*350*106 (W*D*H) Packaged Size 590*510*250 (W*D*H) Weight 10 Kg Packaged Weight 13 Kg Maximum Power consumption 40 Watts Inputs 6 pairs RCA phono sockets Input Impedance 50K Ohms Main Outputs 2 pairs RCA phono sockets Send (Tape) Outputs 1 pairs RCA phono sockets Output impedance (Main) < 200 Ohms Frequency response 2Hz-50KHz +/- 0.5dB Gain (Inputs to Send outputs) 0dB Gain (Inputs to Main outputs) 14 dB +/- 0.5dB Film Gain (Inputs to Main outputs) 0dB +/- 1dB Distortion Less than 0.05% A weighted at 1V output Phase Phase correct (non inverting)

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.Suggerimenti: lingresso U disk è prima del Bluetooth, il Bluetooth si disconnette automaticamente quando è inserito il disco U.

All performance tested good 8 off MADZA 20D1 Double diodes Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer

filament & performance tested good, please see photo. Selling as used but looks in good condition mu=6.5mA/V (spec=5.7) Gas leak good, Cathode leakage good CBL1 = Output Pentode ( Mullard) Will try to combine postage for overseas buyers for valve auction items closing on the same day. (limit at 2kg shipment ). Please wait for invoice to arrive before paying. Typically there should be at least 50% reduction for postage on the second item. Notes : For overseas buyers, any applicable customs charges are the responsibility of the buyer