"Lord Valve"
http://taweber.powweb.com/store/zmatch.htm
** Hmmm: from what I can find using Google, it's an E-core, multi-tapped
auto tranny in a box.
Ought to work OK with valve / tube guitar amps - but maybe not so well
with bass amps.
And a definite NO NO with solid state amps, cos the core will saturate at
low frequencies and overload the output transistors, something fierce.
One guy here is Australia found using it interfered with the reverb sound
from his Fender.
I wonder if he had the box sitting smack on top of his amp as shown in the
advertising.
..... Phil