Ace Tone

Ace Electronic Industries Inc., or Ace Tone was a manufacturer of musical instruments, including electronic organs and analogue drum machines, and effects pedals. Founded in 1960 by Ikutaro Kakehashi with an investment by , Ace Tone can be considered an early incarnation of the Roland Corporation, which was also founded by Kakehashi. Ace Tone began manufacturing amplifiers in 1963.

Note: Rhythm Ace series were known to be shipped under multiple brands as following:

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