Schiit Lyr 3 Tube rolling thread.....

[kiwivda]

Hey guys first time writing here and starting to roll on my Lyr3, but I was wondering, I have these tubes in stock from various other friends of mine and myself, which ones would fit the best?

BRIMAR 6SN7 GT made in 1959 in smoke version
SYLVANIA 5692 WGT with military spec, double ring top getter and brown socket
SYLVANIA 6SN7GTB long "t" black plate, getter on top, chrome plate and PHILCO writing
WESTINGHOUSE 6SN7GT
Shuguang 6SN7-SE GLOBE Shuguang Treasure Series (very curious on this one with round bulb)
Electro Harmonix 6H30PI NOS EH Double Triode which I do not know if it will fit without blowing all away
Psvane CV181-T-MII MarkII Series 6SN7

where do I start and which one should I avoid?

 

[ProfFalkin]

Hey guys first time writing here and starting to roll on my Lyr3, but I was wondering, I have these tubes in stock from various other friends of mine and myself, which ones would fit the best?

BRIMAR 6SN7 GT made in 1959 in smoke version
SYLVANIA 5692 WGT with military spec, double ring top getter and brown socket
SYLVANIA 6SN7GTB long "t" black plate, getter on top, chrome plate and PHILCO writing
WESTINGHOUSE 6SN7GT
Shuguang 6SN7-SE GLOBE Shuguang Treasure Series (very curious on this one with round bulb)
Electro Harmonix 6H30PI NOS EH Double Triode which I do not kow it it will fit without blowing all away
Psvane CV181-T-MII MarkII Series 6SN7

where do I start and which one should I avoid?

Fit best how? Sonically? Physically? Those are all very nice tubes.

They should all be compatible. I don't know if the round globe will physically fit, but you can try it.

 

[kiwivda]

Fit best how? Sonically? Physically? Those are all very nice tubes.

They should all be compatible. I don't know if the round globe will physically fit, but you can try it.

Let's say first sonically (if you know some of them) and then also physically meaning not to fry everything

 

[bcowen]

.

 

[ProfFalkin]

Let's say first sonically (if you know some of them) and then also physically meaning not to fry everything

It's incredibly hard to answer that question, because I don't know what headphones, DAC, or musical preferences you have.

Just try them, see which one you like.

 

[kiwivda]

Ok except for the 9 pin one I'll give each one of them a try. Sonically I prefer warm sound with lively sensation, but I do not mind even a bit of detail on the highs.

 

[ilikepooters]

Ok except for the 9 pin one I'll give each one of them a try. Sonically I prefer warm sound with lively sensation, but I do not mind even a bit of detail on the highs.

Brimar

 

[FLTWS]

Using a tube lifter with the Psvane CV181-T-MII Series 6SN7 and the Treasure Globe is the way I roll them both. They are just too fat and if the socket is slightly of center with the case opening or not perfectly flush with the top plate the glass may make contact with the metal opening possibly scoring it when inserting/removing. At these prices I baby them. ln my experience most tubes of standard, uniform diameter glass type install pretty easily straight in but I crushed a tube in my hand many years ago trying to pull one straight out. Since then I gently rock/roll every tube when I pull them. The straight sided tubes can be inserted and removed easily without a lifter (especially if you use those cheap, disposable exam gloves - you don't even have to put them on, just wrap around the tube and they grip tenaciously) but I find using a lifter gets heat further away from the chassis and both tube and chassis seem cooler when running.

Which tube depends on what type of sound profile you prefer. I'd save the CV181 and Treasure Globe for last. I find, especially with the T-Globe, a great sound for my preferences. A very few others punch harder and louder at the bottom of the frequency range but the rest of the range is much to my liking.

 

[kiwivda]

...but the rest of the range is much to my liking.

Thank you so much for the advice. Is this one a tube lifter?

 

[Ripper2860]

I don't think the referenced link is actually what you are wanting. Here's what I have and it has been recommended by several here ...

https://www.ebay.com/itm/1-Octal-EL...306810?hash=item41f612e1ba:g:jQAAAOSwgVJcEMMQ

 

[Scrith]

Question: what, exactly, is a Frankentube?

Tube Rolling Update (a busy holiday break, but it was nice to roll at home rather than at work, which is where my Lyr3 is usually located)::
- Mullard ECC32 - This is #1 for me right now, although it is a fairly minor improvement (a bit more impact in mids and highs, similar bass strength maybe just a hair more detail) over my Mullard ECC33 which was bumped to #2 after I heard the ECC32. Requires a socket saver (or something to lift it up a bit) because the base is a bit too big for the opening on the Lyr3.
- Mullard ECC33 - the champion has been dethroned by the ECC32 version, but it is still an amazing tube.
- Brimar/Elpico ECC32 - sound is fantasic, just a notch below the Mullard tubes.
- Brimar CV1988 brown base - outstanding! The ECC32 version seems just a bit nicer (a bit warmer I guess).
- TungSol black glass round plates - fantastic tube, just missing a bit of warmth vs. the English tubes above.
- Foton (Russian) 6H8C (1952) - not bad at all, I was a bit surprised this was keeping up reasonably well with some of the exotic tubes.
- CBS/Hytron 5692 - amazed me when I first heard it, and still sounds the best of my 5692s, but it has been surpassed by some warmer tubes and the TungSol above.
- RCA 5692 red base - the 5692s are all wonderful, and this one is near the top.
- Nevz (Russian) 6N1P-VI - excellent surprise, and incredibly cheap (requires an adapter).
- Raytheon JAN-CRP, US Navy logo, 2-hole plates - another great tube, just a notch below the 5692s above.
- Telefunken ECC82 & 12AX7 - excellent, warm but not too warm, bass might be a bit reduced vs. some of the top tubes. The 12AX7 made a small clicking sound after about 10 minutes and stopped working (I didn't try to re-seat it and make another attempt due to concern about the Lyr3, which is fine, thankfully). Requires an adapter.
- Sylvania 6SN7GT 1955-April, tall, chrome top, green label - better than expected, not much to say other than its a bit less warm than the British tubes.
- Sylvania 6SN7WGT JAN-CHS, chrome top - disappointing tube...mine just seemed a bit weak (bass and treble). I'm hoping to get a deal on another because I think mine is just a bit weak for whatever reason.

I think I have enough tubes at this point (well, a couple of cheap 7N7s are on the way) so I'm going to focus on comparisions and stop worrying about getting new tubes for now.

 

[bcowen]

.

 

[FLTWS]

Thank you so much for the advice. Is this one a tube lifter?

I don't think the referenced link is actually what you are wanting. Here's what I have and it has been recommended by several here ...

https://www.ebay.com/itm/1-Octal-EL...306810?hash=item41f612e1ba:g:jQAAAOSwgVJcEMMQ

Ripper is correct, that is the "lifter" I use, seems to be well made and if I peak inside my LYR3 with its tube removed, the socket looks just like the same white plastic (ceramic?) design.
Keep in mind it's a "lifter" / "socket saver" not a "converter" for using with different tube types with different pin out designations other than 6SN7 types.

 

[ilikepooters]

I better start the hunt for an ECC33, just waiting for payment on my Marconi B65 so i can buy more stuff.

 

[Scrith]

I better start the hunt for an ECC33, just waiting for payment on my Marconi B65 so i can buy more stuff.

Ooh, I want a Marconi B65 (doh, didn't I just say I have enough tubes?). My list also has an Osram B65 w/ metal base, a Swedish 33S30, and a Telefunken 6SN7, in case anyone has one of those for sale!

After those, I'm done. Really.