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What's the best source for these tubes? looked on ebay, found some inexpensive Russians from there. Are these any good?
from the info i've found, the so called substitutes are not exact matches.
Any insight on these would be appreciated.
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is the best sounding to me. I bought a bunch from a person that used to go to Russia as they were hard to find, even years ago, in this type. I have the 1965 black plate and if you can find those, I think you would like the sound. The later grey plate vs is a different contraction and purpose with the 65 black flat plate being design solely for analog equipment. He stated that later versions were actually for digital circuitry for the military and that they continued to use the tubes because they could stand up to a nuclear electromagnetic force but a pure digital circuit could not. so the difference also in sound.
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Not sure about tubes being made for digital application. Any NOS 1960's Russian 6N1P will be preferred. I personally like the ones I was able to procure.
Jim
ARS VS-110
Customized Bottlehead Foreplay II Preamp
Magnepan 2.5R's
B&W ASW 300 Subs
Ah Troeb Tube CD player
MaggieMate X/O's from subs to 2.5R's
Another view
ARS VS-110
Customized Bottlehead Foreplay II Preamp
Magnepan 2.5R's
B&W ASW 300 Subs
Ah Troeb Tube CD player
MaggieMate X/O's from subs to 2.5R's
I bought some if I recall correctly Novo's from 1967 ( Cold War era) directly from a seller in Russia. They sound very much like EC188/6922's. They are still burning in, just about 100 hours on them. They were a bit brittle/bright for the first 30-50 hours before relaxing and warming up.The soundstage they present is very good as is the realism.
They're cheap enough to by a spare set😎
The ones from the 1960's are going to have the best tooling, materials and overall construction.
Jim
ARS VS-110
Customized Bottlehead Foreplay II Preamp
Magnepan 2.5R's
B&W ASW 300 Subs
Ah Troeb Tube CD player
MaggieMate X/O's from subs to 2.5R's
Edits: 01/21/15
Buy a bunch from Russia. For whatever reason, 6N1P's seem to kind of go flat after 6-12 months of use.
The 6N1P in my preamp has been going strong for almost 10 years (with a 12AX7 as a cathode follower). Of course, the amount of "on" and/or listening time, as well as the usual factors (supply voltage, etc.) will determine that too...
I've averaged 1 to 1.5 hours/day of use on mine- even at 1.5 hours/day over a 10 year period, that is just under 5500 hours since the preamp was built...
I'm not trying to call you out or anything. I'm just curious that you only get 6 to 12 months out of one. What are you running it in?
Dman
Analog Junkie
Try buying 8-10 of them and find two pairs that sound about the same. Run one pair for a year, then listen to the original unused pair. It's an odd thing, they will end up sounding very different. (Despite being electrically OK)
I find that, out of the box, they sound edgy and fatiguing and it takes a long time to break them in so that they sound clean. I haven't heard any flattening, later on. The initial sound is really hard on my ears and maybe that's my reference!
Maybe this has something to do with different preferences for different folks.
Observe, before you think. Think before you open your yap. Act on the basis of experience.
About five or 6 years ago, my preamp did indeed start sounding rather, "off". Something wasn't right.
So I did some tube swaps- old for new. As I did this, I tested every tube to verify what might or might not be (were my ears starting to lose it, for example?).
Turned out one the 12AX7s in the phono stage wasn't quite up to the task anymore. Once it was replaced, things were golden again. The 6N1P that had been in place in my preamp since new (pre AND tube) didn't sound any different than a new spare that I tried in its place while diagnosing things (and the test measurements weren't all that different either!).
While I don't doubt you had a seriously different outcome, I can't come up with an explanation for your findings vs. mine.
Weird...
Dman
Analog Junkie
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