[jambaj0e]

Bill - I have recently found a great source for adapters. Meet @Deyan
Deyan is based out of Bulgaria, his craftsmanship is great, he is VERY responsive, and his prices are very fair!
From now on - I prefer buying from him over ANY Chinese source!!

This socket riser is good if we want the tube stick out of the Lyr 3, right? Because it is kind of a pain to install a tube in a socket that is that far recessed.I just hope the sockets won't compromise the sound quality.

 

[Zachik]

I just hope the sockets won't compromise the sound quality.

They do not!

 

[Paladin79]

I actually live 15 minutes from Schiit, and I'm also a filmmaker. If you and/or Jason wants to collab on a review video, etc, I'm happy to work something out

@jambaj0e you may want to PM @Jason Stoddard and see what he says. The 6sn7 equivalent tube challenge has nothing to do with my company, it is just something I came up with to see how much difference folks could detect in such tubes, as well as to find out which ones people preferred. It is pretty easy to go by public opinion or spend $250 for a tube and have a preconceived notion it will be wonderful.

I will be shipping the concealed tubes to Jason along with tube extenders and possibly switch boxes with cables so people can A/B test the tubes. Jason does a monthly get together and the next one will take place September 12 as I recall and feature these tubes. I have sealed them in such a way that it is not likely anyone can tell one from another. Within the PVC are classic examples of great tubes by RCA, Tung Sol, CBS/Hytron, Sylvania, Melz, Foton, Westinghouse, etc. I need to look around the shop but I believe I can send switch boxes that would allow switching between four tubes at once if Jason can dedicate four Lry 3's to the test process. This will be much easier than what @bcowen went through. He had to listen to one at a time and just go from memory and he did remarkably well.

 

[Paladin79]

This socket riser is good if we want the tube stick out of the Lyr 3, right? Because it is kind of a pain to install a tube in a socket that is that far recessed.I just hope the sockets won't compromise the sound quality.

The tubes I concealed absolutely need risers to work in a Lyr 3 and @bcowen was kind enough to build a couple for the challenge at Schiit. Inside each pvc pipe are also risers so the tube bases will all look identical. Both Bill and I used wire that was larger awg and higher grade that what is inside the tubes themselves, all sockets have gold plated pins.(they do not tarnish and you worry a bit less about corrosion or keeping them clean.) Many of the tubes are from the 40's and 50's and each has been thoroughly tested as well as the pins going through an extensive cleaning process.

 

[bcowen]

.

 

[jambaj0e]

So I just got these Ken-rad vt-231 black glass tube for my Schiit Lyr 3 hybrid tube amp, except it doesn't say Vt-231 anywhere. It seems to have the typical physical attributes of this tube based on head-fi's 6SN7 Identification guide thread (Black glass, black flat plates with ladder riding, rectanglular mics with 3 spikes and line of small holes down the middle of the mica).

What do you guys think? Does the non-VT-231 KenRad 6SN7GT Black glass with the same layout as the KenRad VT-231 Black Glass sound the same?


Also, compared to my Raytheon uniline, the mids is certainly smoother and prettier. The bass impact is surprisingly about the same and doesn't really hit much harder on my Audeze LCD-2C.

My system is USB audio to Chord MOJO Dac to Schiit Lyr 3 hybrid tube Amp to Audeze LCD-2C.

 

[Paladin79]

So I just got these Ken-rad vt-231 black glass tube for my Schiit Lyr 3 hybrid tube amp, except it doesn't say Vt-231 anywhere. It seems to have the typical physical attributes of this tube based on head-fi's 6SN7 Identification guide thread (Black glass, black flat plates with ladder riding, rectanglular mics with 3 spikes and line of small holes down the middle of the mica).

What do you guys think? Compared to my Raytheon uniline, the mids is certainly smoother and prettier. The bass impact is surprisingly about the same and doesn't really hit much harder on my Audeze LCD-2C.

My system is USB audio to Chord MOJO Dac to Schiit Lyr 3 hybrid tube Amp to Audeze LCD-2C.

Any other codes on it? Three numbers anywhere?

 

[jambaj0e]

Any other codes on it? Three numbers anywhere?

I updated the post with additional images. I forgot to attach them.

 

[jambaj0e]

Any other codes on it? Three numbers anywhere?

"P 4 R" in a vertical line to the left of KenRad, and "M R" in a horizontal line to the right of KenRad.

 

[Paladin79]

"P 4 R" in a vertical line to the left of KenRad, and "M R" in a horizontal line to the right of KenRad.

With what I can find in my tube books that looks like a pre-war Ken-Rad, pre-dating their purchase by GE as best I can tell.

Mine say 6sn7GT and under that on the base VT-231 and I cannot begin to see through the black portion.

 

[jambaj0e]

With what I can find in my tube books that looks like a pre-war Ken-Rad, pre-dating their purchase by GE as best I can tell.

Mine say 6sn7GT and under that on the base VT-231 and I cannot begin to see through the black portion.

So that's a good thing, I assume? I know if it's before GE, that's good

 

[Paladin79]

So that's a good thing, I assume? I know if it's before GE, that's good

A very good thing lol. It has all the traits of a Ken-Rad as best I can tell

 

[attmci]

@jambaj0e you may want to PM @Jason Stoddard and see what he says. The 6sn7 equivalent tube challenge has nothing to do with my company, it is just something I came up with to see how much difference folks could detect in such tubes, as well as to find out which ones people preferred. It is pretty easy to go by public opinion or spend $250 for a tube and have a preconceived notion it will be wonderful.

I will be shipping the concealed tubes to Jason along with tube extenders and possibly switch boxes with cables so people can A/B test the tubes. Jason does a monthly get together and the next one will take place September 12 as I recall and feature these tubes. I have sealed them in such a way that it is not likely anyone can tell one from another. Within the PVC are classic examples of great tubes by RCA, Tung Sol, CBS/Hytron, Sylvania, Melz, Foton, Westinghouse, etc. I need to look around the shop but I believe I can send switch boxes that would allow switching between four tubes at once if Jason can dedicate four Lry 3's to the test process. This will be much easier than what @bcowen went through. He had to listen to one at a time and just go from memory and he did remarkably well.

Can you share the test results? What's his ratings? I must have missed that.

 

[bcowen]

.

 

[Ripper2860]

All this Ken-Rad talk has driven me to roll a '44 VT-231 out for a spin. It's time to get reacquainted with this classic tube.

Maybe next week it'll be the 50's Westinghouse GTB D getter.

I love this stroll down Tube Hoarder Memory lane. (I sure do miss 'The Professor' -- @ProfFalkin )