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Shootout of Nos 6sn7 tubes

I will have shootout between TS BGRP, RCA vt231, KR vt231, Syl vt231, Raytheon vt 231 and "Bad boy" next weekend.

If I get MELZ 6N8S 6SN7 Metal Base next week, then I will also include it in shootout


RCA5691, Psavne Acme 300B, Psavne Acme 805 are also being used in Line Magnetic 508 amplifier.

Speaker will be Lansche 4.1 with plasma tweeter.

Digital source will be Dave and HMS fed by ripped CD stored in ssd drive of Cocktail audio x30.


I will play

Eva Cassidy's 'Autumn Leaves"

"Trinity Sessionn " by Cowboy Junkies

For classical orchestra, "Trittico" directed by Fennel.

"Still harry after all these years" will be for fusion jazz.

Any more suggestion gentlemen and ladies.

Thomas
shkong78
markusthenaimnut's avatar
markusthenaimnut
378 posts
 
Rodman-
That makes sense and matches my own experience. I brought it up on this thread because it might be a factor in the listening tests of the shootout. 
lowrider57's avatar
lowrider57
5,418 posts
 
I agree with markus and Rodman.
True NOS NIB will need a breakin period. Vintage tube "pulls" that test as NOS will also need some breakin time.

lowrider57's avatar
lowrider57
5,418 posts
 
shkong...
According to my research the early Melz tubes have the 1578 lettering. There were two factories producing Russian tubes and the holy grail tubes have multiple holes on the plates.

https://www.ebay.com/itm/133366164135

shkong78's avatar
shkong78 OP
1,485 posts
 
@lowrider57

If the listed price is 150$ instead of 250$, then I may take the risk.

But I will wait for the tube coming from Ukraine.

As writing this, I am happy with sound out of KR vt231 which sound sweet, laid back and punch.

By the way I use demagnetizaion track for speedy burn in.

It seems to work well.

Thomas
lowrider57's avatar
lowrider57
5,418 posts
 
Yeah, I don't want to spend $250 on tubes I'm not familiar with. If I knew they were the holy grail I would go for it.

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