• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Butler Monad A 100

PRR

Member
Paid Member
2003-06-12 7:04 pm
Maine USA
> how Butler Audio get 100w class A out of a 300B

Butler's recent kick has been "Tube driven". Look at their 375-watt half-breadbox car amps "using" a 6SL7.
http://www.butleraudio.com/tdb575.php

The Monad specs say:
Power Output:
Minimum 100 Watts RMS @ 8 Ohms
128 Watts, RMS typical @ 8 Ohms
200 Watts, RMS typical @ 4 Ohms
http://www.butleraudio.com/esoteric.php

Clearly these are big piles of BJTs/MOSFETs with a tube in front.