Three flavors

Hi-Mu amps never came in more than three flavors: 7 watts, 12 watts and 18 watts. This was 12 years ago, long before the low-watt amplifier renaissance. All of Hi-Mu amps were delivered in the same cabinets, irrespective of the amps watts. One could chose either a combo version with a 12 inch speaker or a head version. For a $50 up-charge you could get tweed, Fender-style black tolex came standard.

While a huge stack of Marshall 4x12s looks really cool, most performance venues use a public address (PA) system rather than trying to fill the arena with the amps the band brought. A properly mic'ed amp doesn't have to pump out a lot of watts to get the right sound. Studio players have always known that great tone can come in small packages, and few people are interested in trying to record or listen to 200 watt amplifiers in a little recording room. While the stories of Duane Allman's Fender Super Champ (18 watts) and Jimmy Page's low watt Valco amps are widely discussed, in the early to mid-90s there weren't a whole lot of amp builders producing low-watt amps. Hi-Mu was one of the few, its top of the line amp only put out 18 watts.

Here are three 1990 era catalog entries on those three Hi-Mu amps.
First below is a catalog description of the 7 watt standard single 6V6 power tube amp.



Next comes a 12 watt version, driven by a single 6L6 power tube.



Finally Barry offered a 18 watt version of his amp, driven by two EL-84 power tubes. He suggested it was basically half of a Vox AC 30.



For the player wanting an amp that also had a three spring tank reverb, Barry offered an up-grade to any of his single channel amps for $150.