Crumar was what you bought if you couldn't afford an ARP.
Ohhh… Cries "unfair"
In 1978 I could afford to get an Omni II, but CHOSE to get the Crumar Performer.
Yes, calyx93, you're right - the 3 phase chorus circuitry was very different for each stringer. The ARP used 3 separate chorus blocks each modulated by it's own LFO, the Crumar (and most other stringers) used 3 chorus blocks but only two LFO's that were inter-modulated and out of phase… Sorry, that's the geek in me screaming to get out, but the difference in sound is very noticeable.