[2359glenn]

I certainly don't consider the TS to be warm, but fairly neutral.

Since they are not all that expensive, I would recommend a gray-glass RCA 6SN7GT for a warm driver. And a pair of RCA 6AS7G for warm outputs. Again, these are not expensive and more importantly, they would provide you with reference points.

Try the RCA 1633 it is a 1940s gray glass RCA and only costs $4

 

[UntilThen]

Mustve missed something...What happened to your GOTL?

My GOTL starts up with crackles, pops and hiss - possibly due to loose pins contact, which in turn is due to too much tube rolling but what would I know. It will be send back to Glenn for diagnosis and likely sockets replacement.

So look after your amp mate. In the interim I'll get to play with LF339.

 

[leftside]

Yes RCA 6AS7G are warm for power tubes...also Mullard 6080 tubes may be a good choice, but a little more expensive than RCA 6AS7G

RCA seem to be a little warm across their entire range of tubes. I have RCA 12ax7 long black plates and they are probably the warmest 12ax7 I have.

 

[Sound Trooper]

My GOTL starts up with crackles, pops and hiss - possibly due to loose pins contact, which in turn is due to too much tube rolling but what would I know. It will be send back to Glenn for diagnosis and likely sockets replacement.

So look after your amp mate. In the interim I'll get to play with LF339.

Hey UT, hope it’s nothing serious. Look on the bright side, at least you will be getting the Yamamoto sockets.

 

[gibosi]

@Monsterzero

Per XC's recommendation, some info on the Sylvania "Bad Boy":



https://www.head-fi.org/threads/the-6sn7-identification-guide.209782/

I would add that I have seen examples of Bad Boys as late as early 1953.

Sylvania 6SN7GT 1952 “Bad Boy”
Also JAN-CHS-6SN7GT
Made only from late 1951 (‘1-48’ examples seen) to 1952. Differs slightly in construction from ‘regular’ Sylvania rectangular top mica 6SN7GTs. Re-labeled bad boys are known to exist.
Base: black, green labels marked ‘2-XX’ (where XX is the week of the year)
Glass: clear
Plates: black, T-plate with 3 holes per plate
Getter: bottom, foil, flashing can extend up to 1/3 of way up tube
Top mica: rectangular with 3 spikes on each of the shorter edges
Other significant features: bottom mica is rectangular. When seen, date codes are vertically arranged (from top to bottom) ‘YWW’ with Y underlined. Y = last digit of year, WW = week number of year.

 

[JazzVinyl]

Try the RCA 1633 it is a 1940s gray glass RCA and only costs $4

Right-o!!

You don't need super expensive or exotic tubes in the GOTL to get great sound!!

 

[JazzVinyl]

My GOTL starts up with crackles, pops and hiss - possibly due to loose pins contact, which in turn is due to too much tube rolling but what would I know. It will be send back to Glenn for diagnosis and likely sockets replacement.

So look after your amp mate. In the interim I'll get to play with LF339.

Luck in getting it back to 100%, UT.

 

[UntilThen]

Luck in getting it back to 100%, UT.

Thanks. It will have to wait till 2019 until the festive rush is over.

It has been a good year with GOTL. I have use it a 110% and will no doubt miss the sound of 6 x 6bx7.

Going to pick up the La Figaro now.

 

[rnros]

...
Any opinions on the Cetrons?

Hi MZ, agree with the other comments, Cetron 6336B is a neutral tube.
Also natural, clean, open, dynamic and highly resolving.
As always, have to hear and judge for yourself.

 

[rnros]

Thanks. It will have to wait till 2019 until the festive rush is over.

It has been a good year with GOTL. I have use it a 110% and will no doubt miss the sound of 6 x 6bx7.

Going to pick up the La Figaro now.

Sorry to hear about that, UT. Good that you have other amps to use in the interim.
I thought you were only having problems using certain adapters in the C3g sockets.
But it will be nice to have the GOTL returned with upgraded sockets.
Good luck with the whole process, just a nuisance to have to wait for the holiday rush to pass.

 

[Monsterzero]

Hi MZ, agree with the other comments, Cetron 6336B is a neutral tube.
Also natural, clean, open, dynamic and highly resolving.
As always, have to hear and judge for yourself.

How would you rate the slam on them 1-10?
These were originally brought to my attention for the Verite,as the 6BX7s added too much slam to my ears/gears.

 

[JazzVinyl]

How would you rate the slam on them 1-10?
These were originally brought to my attention for the Verite,as the 6BX7s added too much slam to my ears/gears.

Sounds like the Verite’s do not like tube amps?

I don’t think the 6BX7’s are known for humongous slam?

 

[2359glenn]

Thanks. It will have to wait till 2019 until the festive rush is over.

It has been a good year with GOTL. I have use it a 110% and will no doubt miss the sound of 6 x 6bx7.

Going to pick up the La Figaro now.

I think it is best to use good socket savers and leave them in. Only switch tubes in the socket savers and never remove them from the amp unil when they
wear out.
Something like these
https://www.ebay.com/itm/1-EL34-GZ3...=item41eb1f9afd:g:l8UAAOSw9elbfLWY:rk:25:pf:0

 

[Monsterzero]

Sounds like the Verite’s do not like tube amps?

I don’t think the 6BX7’s are known for humongous slam?

I wouldnt agree with that statement at all. The Verite sounds brilliant thru the GOTL.
I dont really know/understand what was causing the issue that I was hearing,but when I took the 6BX7s out of the amp,the problem went away.
The problem was,for me,that the slam wasnt decaying fast enough and was drowning out the imaging.
Perhaps the 6BX7s were over driving the Verite? IDK.

 

[rnros]

How would you rate the slam on them 1-10?
These were originally brought to my attention for the Verite,as the 6BX7s added too much slam to my ears/gears.

Easily a 10... But I want to clarify that... 10 for capability, 10 for accuracy, 0 for exaggeration.

I wouldnt agree with that statement at all. The Verite sounds brilliant thru the GOTL.
I dont really know/understand what was causing the issue that I was hearing,but when I took the 6BX7s out of the amp,the problem went away.
The problem was,for me,that the slam wasnt decaying fast enough and was drowning out the imaging.
Perhaps the 6BX7s were over driving the Verite? IDK.

That makes more sense to me. Not so much the transient slam itself. Your description is a good one.
I have had some 6BX7s that were not as clean as I would like at the low end.
You could try the RCA clear tops from the early 60s. The Tung Sols also seem accurate, but only listened a few times.
As for the CTN 6336Bs, they are clean/accurate.