Small or big tubes/valves for pre amp ?

@rodman99999
My statement should have been that the Sylvania 6SN7 do no re-produce bass very well. They are fantastic at almost Everything else
I think you understood what I meant. Take techno music for example . Most of it has a lot a Bass. I also understand that a lot of tube amps are not heavy hitters in the Bass dept.
Some people may not notice it too much... ????
But below is the real problem with 6SN7s  IMO as well as Many other's opinions too 

The only one I really liked sonically was Tung-Sol black glass round plate VT-231, but they’re so hard to source with any decent life left - and again, good luck with noise

This worries me a bit to hear, although I am no bass freak, I like tight bass, using a solid state power amp instead of tube power amp make any difference?

"...opinions..."   Exactly!

This worries me a bit to hear, although I am no bass freak, I like tight bass, using a solid state power amp instead of tube power amp make any difference?

'Tight bass' isn't natural bass, FWIW. It usually occurs in stereo systems where the woofer is overdamped.  6SN7s have no worries playing bass- no tube does- any tube can go to DC.

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IME/IMO, the worst of the 6SN7s are as good as the best of the miniature tubes. When you get a good 6SN7 no miniature tube competes. We use 6SN7s in all our preamps. We used to use miniatures in our amps decades ago, but when I discovered that 6SN7s were back in production, we switched over to them and never looked back.


Microphonics can be an issue, but that is true of all the miniature tubes too- in particular the 6DJ8/6922 family. BTW, the 12AU7 and 6CG7 are based on the 6SN7. The latter is literally a 6SN7 in a mini envelope; the former has half the plate area but similar geometry and so acts very similar on paper, but neither sound as good as the real thing.


Andy Bowman has been supplying our customers with good tubes for a long time.


We've been getting feedback on the TJ Music, Black Treasure Psvane and Sophia. They are universally liked, in particular the former two; with comments like "the best of all the NOS tubes rolled into one without the weaknesses". That's a pretty serious statement- but we hear it a lot. We have found though that the Sophias have been short-lived in comparison.

I use 6SN7GTBs in both my Schiit Freya (4) and my Dennis Had Firebottle SEP HO (1). NOS Amperex in the Had, NOS RCAs and Sylvania "chrome domes" in the Freya...utterly great sounding all around and I haven’t noticed any lack of bass with Sylvanias as this combo has slam for days. I do have a pair of REL subs in this system though...in the Freya The RCAs are in the "input" and the Sylvanias are the others, but it sounded great with all Sylvanias, just a little better with the RCAs. No dreaded microphonics, no hum, certainly the quietest tube rig I’ve heard, and, again, not a euphonic grease fest but clarity and tonal bliss (I think I just went too far)...efficient speakers make it work. All 6SN7GTBs certainly simplifies things for tube collection fun, and GL KT77s (2) round out the tubulars in this system.