Oh, It's amazing! I've heard this great machine at my dealer. But it costs 1,300,000 won(almost $1,444). It's more expensive than US prices.
Let me talk about the sound of this machine. 1st of all, great deal of tones and quality. I could find tones I wanted to find by it's name. And selected the tones with keys easily. It makes Distortion Guitar sounds better than any other instruments I ever heard. If you're mania of Rock or HM, It's very useful to you with this sounds and drum-kits. "It's Real American Sounds." said my dealer at department.
In Korea, many of keyboard musicians tend to choose instruments KORG, YAMAHA, Roland ... Japan companys' products. Of course, their products sound also good and useful. But they don't have amazin' powerful sounds like this MR-Rack. Some of Korean/Asian musicians (like me) are findin' more "ATTACKtive(?)" sounds than KORG's simple and sensitive sounds. I'm certain that they would play ENSONIQ MR-RACK & Synthesizer models with pleasure like me. And... I wish buy these sounds by MR61 Synthesizer model not this module model. 'cause... I realized needs of these sounds and I MUST use them for my main instruments exclusively.
If you're hobbyist or beginner of MIDI, I recommend this machine STRONGLY to use.