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GT 6201M--currently being touted (though not current production)

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In Reply to: Groove Tube's 6201M ?????????????????? posted by fatbottle on July 28, 2002 at 01:51:15:

FB,
Well, its currently being sold (though not currently being made). And I've seen ads where amp companies (and these weren't guitar amps, but hi-fi amps) touted the GT 6201M. Extolling their virtue in the manufacturer's product.
I haven't used the Ei 12AT7. Most of my experience is with NOS stuff. But, for ancient Fenders and Marshalls the old US made 12AT7 and Philips (Mullard, Philips, Valvo, Amperex) or TFK made ECC81 seem to bring out the classic tone best.
I, also, haven't tried the Mullard CV 4024. Is this tube similar, in tone to the Mullard E81CC? The last time I bought a few of these gold pins boys for $25, each NOS. Kinda high price---looked like late 60-70's production. Quiet tube, okay tone.
Last set of NOS that were nice, cost $25 each. Dutch Philips Miniwatt E81CC. Nice tone in European guitar amps. Pretty tough tubes. I bought a few about three years ago, so I'm sure the prices have gone up.

Follow Ups:

Re: GT 6201M--currently being touted (though not current production) - fatbottle 11:46:07 07/29/02 (3)
Hi Steven ,
No idea about the tone of the CV4024 , I'm a hi-fi freak so I can't comment about the usage within guitar amps . The E81CC designator indicates commercial usage , I would guess these are single support ?The Cv4024 has different construction to the usual ECC81 types , it has the additional M8162 designator referring to a special quality or long-life type . Instead of single support it has double copper anode supports and is of ruggedised construction . Internally the anodes look more like a shorter ECC82/83 . The glass feels thicker than standard ECC81 and there is an extra layer of mica , perhaps to reduce leakage . If you are keen to try some reasonably priced NOS Mullard CV4024 , please email me .
...FB
- CV 4024 - steven oda 14:27:57 07/29/02 (2)
  FB,
  Will keep this in mind. Thanks, for the offer. I have a bunch of RCA 12AT7 BP and these GP Mullard E81CC (could a Philips design, as it has the seam at the top).
  And TFK ECC81 buried somewhere or other. The Mullards do have short plates---about the same length as the TFK.
  - Re: CV 4024 - Micron 14:39:56 07/30/02 (1)
    What about ECC801S as a very high quality ECC81?
    Nicolas
    - TFK ECC801S - steven oda 23:02:31 07/30/02 (0)
      M,
      Only had few chances to use this tube. It is a very good tube. But, I don't think the money you'd need to dish out for a real NOS TFK ECC801S is worth it. But, if you have lots of extra cash and can afford them---by all means try them out. Good tone. Lasts a long time.

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