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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

Showing 2 responses by pesky_wabbit

pesky_wabbit's avatar
pesky_wabbit
1,183 posts
 
If you rewire your filaments to 8V or 12V the price of NOS SN7s becomes a whole lot cheaper.

Better still don’t use an amp with tubes that every Tom Dick and Harry is using, driving prices up to insane levels. The 6SN7 isn’t the be all and end all by any means, and there are plenty of viable alternatives which don’t have the mythology attached.

If you build our own gear the world is your oyster. Ever heard a really well designed 12B4 preamp?
pesky_wabbit's avatar
pesky_wabbit
1,183 posts
 
I found that Nos12sn7 tubes are available at lower price.

But I like full and sweet sound out of 6sn7.
Did you change the filament voltage on the amp concerned to suit the12SN7? All other things being equal, the filament voltage shouldn’t make the slightest bit of difference to the sound. You were hearing the difference between the tube types, not the difference between absolutely otherwise identical tubes using different filament voltages.

To make a sweeping statement that 6SN7 tubes are ‘fuller and sweeter’ than 12SN7s, or 8SN7s for that matter matter without conducting a series of tests using controlled samples is simply not credible.
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