Pretty nifty
synthesizer. Cheap, too. Got mine for $850 incl.
shipping. It has a
32-bit RISC processor with 8MB
ROM waveforms, a fully programmable
synth engine with a 16-track, 20,000 note MRC-Pro sequencer and a decent
effects processor (40 effects). Its 640 patches can be expanded to over 1,600 with up to four SR-JV80-Series Expansion Boards. The XP-50 can sync its
LFOs to
MIDI clock, allowing you to easily create dance rhythms or spiffy
synth sweeps.
RPS patterns can also be locked in sync and even played back directly off the
floppy, though that tends to be a tad
slow.
Its only flaw is the fact that it's hell to learn how to use all of its features, and the manual is pretty bad.
Overall, I like it very much. Perfect for Industrial, Ambient or other permutation of electronica. The entire Roland XP/JV series kicks ass.