Tubes Asylum

Which 12AT7 NOS Tubes Do you Like?

50.49.109.69

rosendds@frontiernet.net

I will need to buy a pr.of 12AT7 tubes for a McIntosh Mc275 that Mike Samra is rebuilding.I would like to know which NOS tubes to look for.Thanks!
Dave

Follow Ups:

Mullard CV4024, OLD Sylvanias, - Cory M. 12:14:37 04/12/15 (0)
Or if you're adventurous, 12AY7's. They won't be the best pick for all applications, but they are a favorite of mine. After trying a bunch of 12AT7's, some old G.E. box plate 12A Y 7's just made me say "ahhh", and they've stayed in ever since.
The good thing is that (most) old 12AT7's are still fairly reasonably priced, so you can try out a lot of them and figure out which ones you like.

Cory
GEC A2900 - DAK 00:35:08 04/07/15 (0)
Uber rare but another excellent 12at7 type. It is a very neutral sounding tube and non microphonic. I use them in my phono preamp after testing almost all the best 12at7 types. cheers, dak
RE: Which 12AT7 NOS Tubes Do you Like? - SETdude 10:15:26 04/05/15 (7)
What Jim, Blackdog and Mick said. Upscale has two versions.
- RE: Which 12AT7 NOS Tubes Do you Like? - rosendds@frontiernet.net 10:52:14 04/05/15 (6)
  I appreciate all of the information.It looks like there are lots of RCA gray plates out there.
  - RE: Which 12AT7 NOS Tubes Do you Like? - Jim McShane 09:47:40 04/06/15 (5)
    Just be careful... A lot of the old stock stuff is excessively microphonic! One reason I like the CV4024s is they are (IMHO) the least microphonic of all the old stock 12AT7 family I've dealt with.
    - RE: Which 12AT7 NOS Tubes Do you Like? - Bigjimsguitars 18:11:40 04/06/15 (4)
      Jim:
      
      I know there Uber rare and expensive, what's your take on '801s' ?
      
      Jim
      ARS VS-110
      Customized Bottlehead Foreplay II
      Preamp
      Magnepan 2.5R's
      B&W ASW 300 Subs
      Ah Tjoeb Tube CD Player
      w/Siemens E288CC's
      MaggieMate X/O's from subs to
      2.5R's
      - RE: Which 12AT7 NOS Tubes Do you Like? - Jim McShane 10:31:02 04/07/15 (1)
        
        In Reply to: RE: Which 12AT7 NOS Tubes Do you Like? posted by Bigjimsguitars on April 06, 2015 at 18:11:40
        
        I doubt I'd be willing to pay the price it takes to buy them. I guess I don't feel the extra investment is worth it.
        
        RE: Which 12AT7 NOS Tubes Do you Like? - Bigjimsguitars 13:33:21 04/07/15 (0)
        
        In Reply to: RE: Which 12AT7 NOS Tubes Do you Like? posted by Jim McShane on April 07, 2015 at 10:31:02
        
        Jim:
        
        I agree with the points you have made. Microphonic tubes are a real concern. I've always favored industrial tubes and or those made for the military. A good thing to do when seeking out tubes is to do a google search for tube substitutes and then go from there. Expensive doesn't necrssarily mean better!
        
        Jim
        ARS VS-110
        Customized Bottlehead Foreplay II
        Preamp
        Magnepan 2.5R's
        B&W ASW 300 Subs
        Ah Tjoeb Tube CD Player
        w/Siemens E288CC's
        MaggieMate X/O's from subs to
        2.5R's
      - RE: Which 12AT7 NOS Tubes Do you Like? - SETdude 03:09:52 04/07/15 (1)
        
        In Reply to: RE: Which 12AT7 NOS Tubes Do you Like? posted by Bigjimsguitars on April 06, 2015 at 18:11:40
        
        I'm not Jim but have been told by a reputable tube dealer that the Tele 801s is a good tube but rarity dictates the price...if you can find them.
        
        Lot of good 12AT7 types around - FenderLover 11:40:31 04/07/15 (0)
        
        In Reply to: RE: Which 12AT7 NOS Tubes Do you Like? posted by SETdude on April 07, 2015 at 03:09:52
        
        Most 6201 will fit the bill. I like Euro E81CC and US TMBP's. I have not used very many modern 12AT7 types.
RE: Which 12AT7 NOS Tubes Do you Like? - krankkall 07:08:57 04/05/15 (0)
I'm using a French-made (RTC) Amperex Bugle Boy ECC81/12AT7 tube, in Alex's RH84 amplifier.

Steve
RE: Which 12AT7 NOS Tubes Do you Like? - Frihed89 01:07:41 04/05/15 (1)
I concur with "Fender". If you want to try a tube with a dark sound, the TMBP by Sylvania fits the bill, or the RCA equivalent. The best of the lot is the TMBP Raytheon, i think.

Observe, before you think. Think before you open your yap. Act on the basis of experience.

Edits: 04/05/15
- TMBP Raytheon 12AT7WA - FenderLover 14:01:31 04/05/15 (0)
  Most excellent tube!
RE: Which 12AT7 NOS Tubes Do you Like? - Bigjimsguitars 18:27:33 04/04/15 (0)
I'm thinking you might ask Mike since he is rebuilding it.

Jim
ARS VS-110
Customized Bottlehead Foreplay II
Preamp
Magnepan 2.5R's
B&W ASW 300 Subs
Ah Tjoeb Tube CD Player
w/Siemens E288CC's
MaggieMate X/O's from subs to
2.5R's
RE: Which 12AT7 NOS Tubes Do you Like? - FenderLover 18:23:35 04/04/15 (0)
TMBP Sylvania 12AT7WA (6201) or Valvo E81CC.
RE: Which 12AT7 NOS Tubes Do you Like? - Blackdog 16:21:10 04/04/15 (0)
Try here. You can't got wrong with any of them, but the gold pin 6201 are particularly good.

Dan Santoni
- http://www.mullardtubes.com/MullardPreampTubes.aspx (Open in New Window)
RE: Which 12AT7 NOS Tubes Do you Like? - sony6060 13:25:02 04/04/15 (0)
I like RCA grey plate. A little warmer vs RCA black plate.
RE: Which 12AT7 NOS Tubes Do you Like? - Jim McShane 10:49:16 04/04/15 (1)
CV4024 Mullards work very well, that's been my recommendation for a good while. People like them a lot!
- RE: Which 12AT7 NOS Tubes Do you Like? - Mick Wolfe 16:57:14 04/04/15 (0)
  I'll second that.

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