Dave H
Dxxxxx@Vxxxx.com
6/29/98 5:01AM


If you look carefully in the Tube Amp Book
you can see that the B+ winding is 280-0-280 at
160mA (90VA). You can add up the heater
current for the number tubes you are using. I
only used 2 12AX7s and a SS bridge rect in mine
with a transformer rated at 275V 300mA, 6.3V
4.5A. It puts out about 40W. I don’t miss the
tube rect as there is loads of compression.
The OT is 4k p-p but because it’s class A it
will have to be able to handle 200mA DC. 

These things run hot so make sure you have
good ventilation or use a fan. The fan in mine 
has just failed so I converted to fixed bias.
Is that sacrilege ? It still sounds great and
it doesn’t overrun the tubes now. 

Dave