(thing) by break Fri Aug 25 2000 at 11:24:36
A rackmount 12-bit sampler with 8-part multi-timbrality and 16-voice polyphony. Released in the late 80s.

The S-550 is basicially a 2-space S-330 with 1.5MB of internal memory over 4 discreet sampling blocks.
I like it!