Tubes Asylum

Posted by DeKay (A) on August 17, 2014 at 21:24:27

In Reply to: RE: The positions are still not clear as V03, V05, V06 & V07 all use 12au7/6189 tubes... posted by wiggy924 on August 17, 2014 at 13:33:36

the lines I suspect that you are looking for more midrange warmth/bloom, which I doubt the Cifte will offer.

As I'm not familiar with new production tubes I will again suggest a later production Mullard (Blackburn production) 12au7 for starters (the later Amperex Holland production is not quite as warm sounding , but it might be a good candidate as well).

According to the info you have supplied it would go in V03.

Brent Jesse (see link) has the Mullard Blackburn 12au7 listed @ $41 (they have Orange Amperex World logos and they are the same as the ones I use in my line stage).

You should note when ordering that the single tube will supply both channels, which indicates that the dual sections/triodes should to be matched to one another (this is common and not a big deal).

If you want to try new production then Jim McShane (sp) is a popular choice here @ AA and perhaps he has old production tubes as well.

Anyway, this is where I would start if it were my amp and then I would probably move on to fine tuning the driver tubes (V06/V07) afterwards.

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