The Reference 6SN7 Thread

Apr 7, 2023 at 4:46 PM Post #8,596 of 10,669
I know!!! One of these days he will want another amplifier in a cardboard cabinet and I will ignore him.🤪
Very nice! I've been thinking about getting a Darkvoice to try out some 6sn7 tubes. I could've also benefited from some haha. Also, I kinda want to look into modding it
 
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Apr 7, 2023 at 6:00 PM Post #8,597 of 10,669
Very nice! I've been thinking about getting a Darkvoice to try out some 6sn7 tubes. I could've also benefited from some haha. Also, I kinda want to look into modding it
I have a Darkvoice laying around that has like five minutes on it. I only bought it to get measurements in order to build @bcowen an extension cabinet. PM me a reasonable offer and I will even throw in another tube headphone amp I am not using. The darkvoice definitely needs mods, the noise gets worse when running Russian 6sn7 equivalents.
 
Apr 7, 2023 at 8:05 PM Post #8,598 of 10,669
I would take 20 or so off your hands for $15 each, I would charge you less but it is a lot of work to shift around better tubes to make space.😜
You should be offering him $5/lb.
 
Apr 7, 2023 at 8:32 PM Post #8,600 of 10,669
Apr 7, 2023 at 10:04 PM Post #8,601 of 10,669
I've actually seen online listings for tubes by the pound
I remember looking at those in my youth. Now I only browse listings for tubes by the ton. 🤣
 
Apr 9, 2023 at 11:32 AM Post #8,603 of 10,669
I am looking at the MaxiPreAmp II now, is that anything wrong I should know about? I've sent an email asking them about ECC32 and 6J5s, hopefully they are compatible with the tester

I got a response,

The tubes you list from an earlier era of tube manufacture are testable on the Maxi-Preamp, with the use of optional adapters. We have a stock range of adapters available on our website, named by their EIA base-diagram nomenclature. For instance, the 6SL7 has EIA base diagram 8BD, so that is what we call our adapter for this type.

Adapters that are not in our stock range are called 'custom order' and are made individually to order. The cost for each custom adapter is $99 USD. You would need adapters for the following types you mention:

6J5GT
6F8G/6CG68
ECC32

Like I get the 6F8G needing its own converters (if I want to directly use 9pin -> tube), but wouldn't the 6J5GT and ECC32 just use the typical octal converter? Or do you guys reckon there is some dark magic inside the custom converters?!
 
Apr 9, 2023 at 11:44 AM Post #8,604 of 10,669
I got a response,



Like I get the 6F8G needing its own converters (if I want to directly use 9pin -> tube), but wouldn't the 6J5GT and ECC32 just use the typical octal converter? Or do you guys reckon there is some dark magic inside the custom converters?!
All 3 of the tubes listed have different pinouts, so yes you'd need a different adapter for each one to go into the 9-pin sockets of the MaxiPreamp. If it's mostly octals you want to test, you might look at the MaxiMatcher tester instead (which is set up for octals) and then adapt from those sockets into the 9-pin tubes you want to test. Perhaps one of them will handle more of the tubes you want to test than the other without adapters.
 
Apr 9, 2023 at 11:50 AM Post #8,605 of 10,669
All 3 of the tubes listed have different pinouts, so yes you'd need a different adapter for each one to go into the 9-pin sockets of the MaxiPreamp. If it's mostly octals you want to test, you might look at the MaxiMatcher tester instead (which is set up for octals) and then adapt from those sockets into the 9-pin tubes you want to test. Perhaps one of them will handle more of the tubes you want to test than the other without adapters.
Perhaps I got clouded by the ECC32 being able to slot in directly, but you are right, I discounted my own 6J5GT converters, of course I will need an adapter, doh

The only Maximatcher variant available now seem to be the Maximatcher II, I was under the impression that its more for power tubes

But of course if it works I won't be opposed to it, I do have a bunch of 12au7s but I will mostly be trapped in octal sickness for a really long time
 
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Apr 12, 2023 at 8:12 PM Post #8,606 of 10,669
Can anyone help me with a manufacturing date on these?
KENRAD CKR-6SN7GT.
E3 is the only markings I see.

Thanks 🙏
 

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Apr 12, 2023 at 9:58 PM Post #8,608 of 10,669
That's a very personal question. In a very personal 'market'. IMO, they'd be middling-bottom-middle. But, that's just for me, in my gear.

But so much depends on the amp, the moment, the music, the mood. And really, there are no bad tubes, just poor moods. :sweat_smile:

The fun of tube rolling is ignoring group think and finding and rolling tubes one enjoys. The high $$$ cost of that method isn't attractive, but hoarding collecting over 500 tubes is its own attraction. 🤣
 
Apr 13, 2023 at 12:35 AM Post #8,609 of 10,669
The fun of tube rolling is ignoring group think and finding and rolling tubes one enjoys. The high $$$ cost of that method isn't attractive, but hoarding collecting over 500 tubes is its own attraction. 🤣
… just ask bcowen about his ‘fotonopoly’ ☑️
 

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