I need a couple of good 6SL7's

[ron vogel]

I probably have a ton of them...I need to readdress my inventory anyway.

[mac dillard]

Try Vacuum Tubes, Inc., Vacuum Tubes, Electron Tube, Radio Tubes, Audio Tubes, Industrial Tubes, Guitar Tubes, Capacitors, Tube Sockets, Tube Testers

[Leo_Gnardo]

It's been a problem finding good 6SL7's over 25 years. When they were (only!) 10 - 12 bucks apiece I'd get half a dozen from Antique, random brands Sylvania, GE, RCA, most of 'em microphonic or hummin' like a box of bees. Of course they're "functional" just not useful in a guitar amp, so no point hassling warrantee replacements. Cheaper but similar results with Russian equivalents. Phooey!

Because of the frustration I've gone to the trouble of making my own 9 to octal adapters to supply amps that need 6SL7, and that worked a charm. You can sub any of the 12A-7 family, 5751, etc. and get good results.

[J M Fahey]

That's the point.

FWIW RCA created 12AX7 to replace 6SL7 , go figure, so why not go for the "modern" (60 y.o.) version?

[soundmasterg]

Oopsie.
Off on a bad tangent on that one.
Thanks for the correction.
http://www.williamsonic.com/TubeDI/6SL7GT.pdf

You were probably thinking of the 6SC7, which does have shared cathodes and similar gain to the 6SL7. The 6SN7 has way lower gain but is a great tube.

Greg

[drewl]

Well unfortunately there are amps out there that use oddball tubes which are becoming harder and harder to get good ones- I'm looking at you Ampeg!
With those damn 6K11's, 6C10's etc.
Christ, those amps from the 40's and 50's have some even odder and rarer tubes.
So we have to live with what's available, hope to find good ones somewhere or make adapters or rewire.

[Justin Thomas]

6K11s are out there... 6-B-K11s are extinct... I have a Jet that asks for em. It came with a 6K11 and a 6AV11. I think that made 4 out of 6 stages calling for a gain of 100 end up with 20. Yeah, fill your Princeton Reverb with 12AU7s & see how it sounds... I threw the last 2 6C10s on earth in it. Still not working right. My local shop had the C10s lying around since the 80s just waiting for a Super Champ to come in.

Sometimes I buy broken Ampegs & PAs <JUST> to get the tubes out. The 7591s can be changed for something else. But if you have 7868s or an amp with Compactrons, you're boned (unless they're 6U10s). New sockets or auxiliary chassis for all.

Why, when the writing is on the wall, you spring for the newest tubes available that were admittedly a last-ditch effort to compete with transistors... sometimes being innovative and progressive is really just being retarded. Yet HOW long did the B15 keep octal preamp tubes?

Justin