Jon Johnson Report post Posted April 11, 2017 The Multivox Rhythm Ace FR-13 is a 20 preset rhythm machine manufactured and released by Multivox. Although the unit was compact it offers 3 knobs for tempo, balance, and volume control. The preset rhythms offered limited variation with it's 4 sounds. The unit was also sold and interfaced with some models of Hammond organs. View full drum machine Share this post Link to post Share on other sites
