"Geoff"

Changing it to the 4 ohm tap produces 6dB more gain and
better stability - as you might well expect. The amp now
behaves well and produces symmetrical clipping under all
loads.


I'll bet the customer will be tickled pink, it will be better
than new.


** Dunno what cab the owner has - but if he has a slant front quad box
with four 25 watt Celestion G12Ms, it ought to roar quite nicely.

Particularly if he plays a Les Paul.


.... Phil