2A3

If they glow, this is the place to be
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IslandPink
Amstrad Tower of Power
Posts: 10041
Joined: Tue May 29, 2007 7:01 pm
Location: Denbigh, N.Wales

#16

Post by IslandPink »

Excellent . I do think the Sovtek 2A3 is superior in tone to any 300B , at least in the upper mids and treble, so that will always give the amp some advantages.

One very minimal change that would be fun to try for anyone who is running a pre-amp, is to sacrifice some of the ( excessive) gain and go to a single gain stage on the driver . One stage of ECC40 would be what I'd try - 32 gain on paper , maybe 25-ish in reality . Run the ECC40 sections at 6mA , this would give a bit more treble tone and sparkle . This would put no extra stress on the filament supply or B+ supply and should be a win-win as far as I can see . Only change is you'd have to modify the socket(s) for the driver .
"Once you find out ... the Circumstances ; then you can go out"
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