The Ace Tone Rhythm Ace family: FR-1 Full Auto

Here is a glimpse of the analog drum machine range from japanese manufacturer Ace Tone. Quite popular in the late 60s and early 70s, they were probably the leader in those presets rhythm units at the time before Roland came into the game.
Full analog, only transistors and diodes, no integrated circuit yet.
FR1 and FR2 are basically the same unit. They do sound similar (same PCB) and have the same presets. The main difference is the cancel buttons. On the FR1 you can cancel "bass drum", "cowbell", "claves" and "cymbal", whereas on the FR-2L you can cancel "snare", "claves" and "cymbal".
Of course it is very easy to mod these units and add other mutes buttons, individual levels, outputs etc
The FR20 is quite similar soundwise to the previous ones. The patterns are different, they are fewer but you have 3 "customizable" presets with differents variations of snare and cymbal, thus effectively giving it a wider range of possible patterns, and this time you have cancel for "bass drum", "snare" and "cymbal" which make more sense then the previous ones' choices.
But the main feature of the FR-20 is that it has a built in amp powered speaker cabinet. And it sound loud and deep, it's a great combo. Plus ther is an input so you can plug you organ or synthesizer and play along the rhythm (start stop with foot pedal is possible on all units btw).
The FR6 is quite a different beast. It sounds very different to the other 3, soundwise and in terms of patterns. Sound is brighter, crispier even harsher.
Note all the units where fully recapped so difference in sounds isn't due to ageing component but to design. I don't have the schematics for this one but it's definetly not the same layout. It might have been designed or "inspired" by some other model available at the time. (could be the Roland TR-66 with which it shares many features).
So here is a demo of the first one: The FR-1.
Recorded through a Teisco 120 to add some reverb.

[@neilshenton1834]

Love these old rhythm boxes! 😍👍

[@ohm_studi_ohm]

Yeah I can’t help buying them when I see some non working for sale and bring them back to life.

[@goldenstarmusic1689]

Incredible quality and video production here, this deserves way more views

[@ohm_studi_ohm]

Thanks for the comment. Glad you like it.

[@teresitamillanar]

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[@klinkske]

Did you add fx? I think you did 😎

[@ohm_studi_ohm]

Yes as written in the description the FR1 is plugged into a Teisco Vocal 120 mixer which has a built in spring reverb.