we now offer to add midi input for Acetone Rythm Ace and similar drum machines.
contact us for details and prices.
An example: This is a Goya Melodic Rhythmer an analogue drum machine built into a guitar amplifier case. But is is not only very similar to the Acetone Rythm Ace, it also uses the same PCB ! So it is basically a RythmAce for cheap (but sounds the same).
The picture shows my own unit in my studio, it has been modified and now has midi input. Also the original lights at the front had been substituted by bright red LEDs. The downbeat indicator now blinks in sync with the midi clock.