In article , Andy Evans
wrote:
From a man who will not / can not even measure the performance of his
own design

Let me repeat for the nth time where n is a large number that I have
nothing against engineering whatsoever, and I go out of my way to have
my amps measured on scopes and distortion meters.

As for "up-to-date" and valve technology

Yes, that's exactly what I said. Check posts on audio Asylum.

I presume that means that ECC83s, 12AT7s, EL43s and the like are not to
be found in your designs?

Correct. I've already given a list of valves that sound better. If you
want references: a) Valve Amplifiers, Ed. 3 Morgan Jones b)
http://www.audioasylum.com/cgi/m.pl?...hlight=6sn7+th
orsten&r=&session c)
http://www.geocities.com/la1zka/hifi/distortion.html d)
http://www.enteract.com/~joepage/tubelist.htm
http://users.rcn.com/joepage

The copy of Morgan-Jones that I have only gives data for types of valve
that look 'old' to me - ones I recognise from designs back in the pre
1960's. However if I get a chance I'll look at the above references.

Slainte,

Jim

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