Heres a partial list

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In Reply to: Re: Interesting posted by Chrisp on March 31, 1999 at 06:37:11:

Bear in mind, your milage may vary...
Sylvania 6SN7s vary greatly with vintage-the aerlier the warmer(actually true with many brands). I've tried the 6SN7GTs, 6SN7ws , GTB,WGTAs. The Ws are interesting, but unacceptable as preamp tubes due to *hideous*microphonics. As drivers they are OK-extended but a touch edgey, with HUGE soundstage and good images. The GTBs (later vinteages)tend to be cooler with good control and killer bass-good soundstageing. The WGTAs(70s-80s) are rather veiled.The GTs aren't bad-but a tad microphonic and noisey in my system.
GEs later ones are coin base, earlier onse are standard base-all have grey plates(that I've seen) as a rule, they tend to be somewhat cool and lean sound-VERY quiet and non-microphonic. very good extension tho.
Brimar-6SN7GTY(CV1988s)-chocolatey, smooth dark and dull-not a fan of these.
Mullard CV1988s-warm smooth midrangey, but noisey and microphonic and forward.
Philco-6SN7GTBs nothing special-probably made by sylvania-sound like later ones
RCA-black base,50s-60s. Not bad, I'm using a pair as drivers for my 2A3s. smooth and extended. detailed but not edgey. very good overall. I like these, and may stock up on more.
Phillips 6SN7WGTA-made in 1980s. better then sovtek, but thats about it-very rugged tho.
5692s-Note despite the voltage difference, everyone still uses them as a substitute for 6SN7s
RCA Red base-VERY warm rather soft, rolled off and laid back-bass is mediocre at best @ $60 each, I think they are over rated and over priced. also note-the earlier the warmer and smoother-these were made from the 50s to 70s, and dont all sound the same. however, they are NOT microphonic but can be noisey.
CBS brown base-I like these as preamp tubes-smooth warm detailed and lush-better focused than RCAs, and much better bass-there's alittle more lower mids too. rather quiet tubes, and non-microphonic. I much prefer these as preamp tubes than drivers.
Thats about it off the top of my head. I'll call chimera tonight, and see about the tungsol VT-231s-I just hate to fall in love with a tube that I cannot get more of later.
enjoy,
Jack

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Follow Ups Full Thread

Topic - 6SN7 sound performance - SHAMSUL Bahrin Kamarudin 02:03:30 03/31/99 (11)

he doesn't take plastic-bummer! :-) (nt) - Jack G 10:15:37 03/31/99 (0)

Re: 6SN7 sound performance - Tazsmonn 05:58:41 03/31/99 (0)

Interesting - Jack G 05:23:58 03/31/99 (8)

Re: Interesting - Chrisp 06:37:11 03/31/99 (7)

Vintage tubes services? - Jack G 09:03:36 03/31/99 (4)

Re: Vintage tubes services? - Dennis Boyle 04:35:48 04/01/99 (1)

Miscommunication? - Jack G 05:00:20 04/01/99 (0)

Re: Vintage tubes services? - Chrisp 10:20:13 03/31/99 (1)

Re: Vintage tubes services? - Jack G 10:41:08 03/31/99 (0)

Heres a partial list - Jack G 07:08:57 03/31/99 (1)

Correction - Jack G 05:48:00 04/01/99 (0)

Follow Ups

Heres a partial list - Jack G 07:08:57 03/31/99 (1)

Correction - Jack G 05:48:00 04/01/99 (0)

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