Bandmaster Ltd. Powerhouse
The Bandmaster Ltd. Powerhouse drum machine was built in the 70’s and is actually an 8-Track tape player that plays each track in mono. It came with 8 tapes that have four switchable rhythms each. The ‘tempo’ knob on the box changes the tape speed. Most of the tapes I have really sound bad and some have almost no sound at all. However, Tape 1, Pattern B “Funky Beat” sounds pretty good.
Here are the 8-Track tapes: