Maestro (Gibson) Rhythm King Mark 4 - Analog Drum Machine Demo

This machine was made in 1974. I found this out by looking at the old capacitors before I replaced them. I have heard that the mark 4 sounds the same as the previous ones, however I think it does sound different. Something that surprised me is that the patterns were stored in a ROM, not a diode matrix like the others. Obviously the standout feature of this machine is the volume modulation. It uses the selected rhythm(s) to modulate the volume of an input. On this demo I used a Korg/ARP Odyssey. Overall the Mark-4 is a very surprising drum machine and is worth the crazy prices because it is a crazy machine. Also... I'm selling it on Reverb...

[@lundsweden]

Who were Maestro anyway?

[@daniels_electronics]

Maestro either was bought by or a division of Gibson, know for making guitars. They also made electronic effects and drum machines in Illinois, I think. They made Rhythm Kings mark 1 thru 4, a ring modulator, fuzz, and a phaser - from what I’ve seen.