Roland XV2020 64-Voice Expandable Synthesizer Module
Sound Modules for Keyboards and MIDI work

Roland XV2020 64-Voice Expandable Synthesizer Module
The XV-2020 64-Voice Expandable Synthesizer Module puts Roland's flagship XV sounds in a convenient half-rack design complete with USB. Expandable via 2 SRX-Series Wave Expansion Boards, it's like a powerful 'plug-in' synth with up to 192MB of sounds, three independent effects processors and intuitive editing software.Featured Category: Sound Modules
Sound modules are basically sound generators - or synthesisers, if you prefer - but without the keyboard, well, technically-speaking anyway. They are generally triggered by MIDI messages to produce its on-board sound.
Tell you what, if you need to know more about what a sound module is, and does, check out the MIDI synthesisers article
What others are saying:
feature:
i really do not use any feautures on this unit so i can't really comment, but the feautures in the unit itself seems good.
quality:
everything is fine. if you are going to be controlling the unit manually than i suggest that you don't do it in the dark, but the lighted numbers on the front.that is my only gripe. i wish they would have made the unit more recognizeable in the dark enviroment.
value:
i think the price is fair, but it could be a little cheaper.
sound:
the sounds are beautiful in such a little package. the piano is superb, and the crchestra is very good.overall sounds are all exellent
support:
if customer support is a must. i would not recommend roland to anyone. i still want to choke the guy out at roland that didn't help me with anything, but attitude and debating.
overall:
this is my first module, and i am in love with it. this will be what i will consider a classic in my book.
More Details
If that's not enough then check out the following link for the full specifications - XV2020 64-Voice Expable Synthesizer Module