For sale is offered a rare pare of Mullard CV4004 ECC83 tubes with box anodes in NOS condition and NOS testing 1,2/1,2 mA and 1600/1600 uMhos both tubes so nicely balanced with original Mullard boxes. Very rare and one of the best sounding ECC83 types.
For sale are offered single tubes 6N9S the Russian equivalent of the US 6SL7. Made in Russia 1979 these tubes are made for the Red Army and have an OTK test signature. Matched in pairs or quads these tubes are NOS and very good sounding! Matched from a bulk box of 100 tubes these comes in white boxes with test results (tested on the Amplitrex AT1000). All tubes have the same date and built and anodes. Beats all new production 6SL7 tubes in sound and production quality! Why buy modern production when you can buy these lovely NOS Russian tubes ?
Reflector Corp, Saratov: The Reflector Corp based in Saratov in Russia made some of the best Russian military types. Reflector has built large thyratrons as well as signal valves with most of its production going to the Russian government. All items are original Military sourced items and therefore offer superb build and sound quality. These are the Original Russian made 6SL7GT 6H9C with the large grey anode plate made by Reflector in the end 70's (II-1979). This version was made for the Russian military and all valves have the Russian approval OTK stamped on the glass.
These tubes test extremely good! All 2,2/2,2 mA plate current and minimum 1600/1600 uMhos so perfect balanced, also matched on mu (amplification factor) mostly around 70 mu. So you get a perfectly matched pair of tubes within 1% on platecurrent, balanced at 1600/1600 uMhos and same amplification factor within matched pairs or quads! Matched on the Amplitrex AT1000.
The Telefunken ECC83 is one of the most important tubes in its class – maybe the most important one. It was made in the Telefunken plant in Berlin – and has some distinctive marks which we have to talk about later. The Telefunken ECC83 is maybe the one and only tube in the ECC83/12AX7 range, which behaves is such a neutral way with its sound characteristic, that we are able to hear the quality of a given circuit. That makes this tube for some of us boring – you plug a Telefunken ECC83 into a line stage and the big miracle you will have with a Mullard, Amperex, or RCA Black Plates is seemingly missing. But that is just half of the whole story. A Telefunken ECC83 smooth plates has not the typical shining light to any frequency range or a special dynamic behaviour in the spectrum – nor has it any obvious coloration, but it has one of the most complex midband abilities of all ECC83/12AX7 tubes. You will get a highly neutral ultra complex tube sound, a sound, which needs your attention – it is not a sound were you can read a book, while listening to some music. A Telefunken ECC83 sucks you into the music – and it challenges you.
Price is for a MATCHED pair with tight balanced triodes and with Telefunken boxes. 26 matched pairs available @ November 2 2019! As these are likely to sell quickly I advise to order while stock lasts.
Pleae take note: on the picture you can't see the <> but looked at with a magnifying glass it CAN be seen. These are all DATE MATCHED made in Berlin 16 July 1961! At the end of the 1960's Telefunken stopped producing new tubes. So this tubes aren't produced any more for more then 50 years!
The Philips, Holland made, ECC83 / 12AX7 is one of the greats in the NOS world. Many audiophiles and musicians prefer these to NOS Mullard 12AX7. Having lush tone and liquid highs, this tube is very desirable for Hi-Fi and Musical Instrument amplification. These tubes have the halo getter and bear the delta date code showing they were made in the 1960's in Heerlen, Netherlands. Other have the code I63 B3K2. There are 7 matched pairs so hurry before their gone. Matched pairs on the Amplitrex AT1000. Prices shown are for a matched pair of 2 tubes. These are very rare tubes testing very good a rare chance to get and choose your matched pairs! The tubes with the code I63 B3K2 are made in Blackburn on the Mullard factory! Also available 2 matched pairs Philips Miniwatt ECC83 with RED TIPS selected for the Philips 'Nat Lab' ultra rare.
Matched RARE Western Electric CK-5755 tubes in pairs. One of the best replacement tubes for a 12AX7, ECC83, 5751. Longlife 10.000 hours. Tested en matched on Amplitrex AT1000. Matching ADAPTERS from 12AX7 ECC83 to 5755 available! Price = for a pair of 2 tubes! This CK-5755 is a double-triode made by Western Electric (USA) for Raytheon. It has same specs as 12AX7A / ECC83 / 7025 but with different pinout for Pin 2+3 and 6-8 (see data sheet). For use as 12AX7 an adaptor or an adjusted socket wiring for pin 2+3 and 6-8 is required. Western Electric marked this tube WE 420A for their own brand. The CK-5755 "features special cathode springs which reduce microphonic response. This characteristic is controlled by a "microphonic stability" test for balance in which the tube is tapped at shock levels of 400 - 600G."
One of my customers bought this tube with an adapter for his 12AX7 based amplifier. He reported back to me: 'best I ever had' even NOS stuff like Mullard is nowhere near the performance of this tube.....
Very rare 1960 Russian production made by Reflector these 6N26P are high quality replacement tubes for Chinese 6N3 tubes, Russian 6N3P-EV tubes or USA 5670 tubes. Give a little bit more bass and tremble presence due to larger plates! Pairs are matched on the Amplitrex AT1000 @ plus/minus 14 mA platecurrent for BOTH tubes and noise! Price is for a matched pair of 2 tubes.
This is the famous 5/80 USA NOS 5755 made by Raytheon. As part of the medium MU ECC83 12AX7 it has a different pinout but can be used in this type of circuits. During the years this tube proved to be of excellent sonics. Can be matched in 1% matched gain and balanced triodes. Also still reasonably priced. Price = for a matched pair of 2 tubes.
These are NOS new JAN 5670W from GE. Made in USA 3/87. Excellent sturdy longlife tube replaces 6N3, 6N3P, 6N3P-E and 6N3P-DR. Part of the medium MU ECC83 family. Many 1% matched gain and balanced pairs available. Comes with original boxes. Price = for 1 tube.
This is one of the best testing tubes I know. Voshkod Rocket 09/91. The test scores on the Amplitrex are on par with the USA NOS top GE 5* series. All more then 100% on gain and GM. Longlife 5000 hours. Excellent for matching on gain and balanced triodes. Can sometimes replace ECC83/12AX7. Not the same pinout however. These a highly underrated tubes, give an excellent warm tube sound. Sounds warmer and less 'hot' compared to classic ECC83 12AX7 tubes. Price = for 1 tube.
These are the Russian equivalent of tubes like 5670, Chinese 6N3, 6N26P, 2C51 or ECC42. Excellent longlife 5000 hours tubes with lovely glow. Measures well on the Amplitrex which says much about their quality. Good matching too. Recommended as recplacement tube for all headphone amplifiers, tube preamplifiers, phono amplifiers etc.. Prodution date 92/02. Reflector factory. Price = for 1 tube.
Reflector 6N3P-E replaces the 5670, 2C51, ECC42 and 6N26P. Good quality Russian tube made 12/80 and 05/85. Nice clean molybdeen pins. Very good sounding tube with 3 mica's! Very stable, excellent microphonics. With boxes but these are badly damaged! Price = for 1 tube.
Longlife 10.000 hours best Russian tube 6N3P-DR sister of 6N3, 6N3P-E, 6N3P-EV, 5670, 2C51, ECC42 and 6N26P. Impressive tube. Excellent sonics, allow for 100 hours break in time. Matched on the Amplitrex AT1000. Scarse and in demand. Excellent upgrade on standard stock tubes. Prices shown are for matched pairs.