The Chroma could be used as either a 1-osc/16-voice or 2-osc/8-voice synthesizer and was programmed primarily via a large array of membrane buttons ('80s in every sense). While programming wasn't convenient, the design was fairly sophisticated with a rich sound, never harsh - perfect for bass, strings, funky piano sounds and plucks.

Following the Chroma was the Polaris, a 6-voice analog synth released in 1984. While being simplified in some ways the Polaris has more memory and an extensive MIDI implementation with full parameter control and can play multiple patches at once. Like the Chroma, Polaris has a fat analog sound capable of incredible bass, brass, strings and more - even some Synthex/Rendez-vous'esque sounds thanks to its sync parameter.

We seldom see these synths anymore but their sounds are eminently worthy, and still exceptionally potent - full of the rich analog warmth and character you’d expect from an ARP.