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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
128x128shkong78
snopro
385 posts
 
Yes those are National Union tubes. The Gray glass NU tubes bass was a little soft. Those black glass have good bass and are liquid sounding. You should enjoy them. 
big_greg
6,554 posts
 
@luisma31 It was a different seller. 

@shkong78 It's been at least 20 hours. I'm not about to re-solder the tubes. 
shkong78's avatar
shkong78 OP
1,463 posts
 
@big_greg



It will be better to contact dealer explaining what happened, that is, one tube has no noise and the other one has noise even after 20-30 hours.

He may send you one replacement tube.

Please update the progress.
shkong78's avatar
shkong78 OP
1,463 posts
 
Yesterday I got delivery of quad Sylvania vt231 which I paid only 175$ for four tubes.

Both pairs sound nice with pretty good bass, but one pair give slightly more air and sparkle than the other pair.

I had experienced similar things with Raytheon vt231.

Three pairs of RT vt231 sound different from each other,

One sounds lively, the other one sounds neutral, the third one in the middle.
big_greg
6,554 posts
 
@shkong78 The seller of the tubes (the one in Russia that you recommended) has offered to replace the tubes and pay return shipping.  So far, so good.  I'll update once I receive the replacement tubes.
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