Woot offers Roland JD-Xi for $442.54 (orig. $650.74) + free shipping with Prime.

Product Description:
The tiny, yet powerful Roland JD-Xi analog/digital crossover synthesizer provides you with a true analog synth engine, along with SuperNATURAL digital synth tones, a 4-track pattern sequencer, a gooseneck mic with built-in Vocoder and AutoPitch, and USB for audio/MIDI connectivity. You'll be blown away by the fat, warm analog bass and lead tones that you can milk out of the JD-Xi, as well as the quality of its digital pads, strings, and brass. The Roland JD-Xi gives you powerhouse performance in a pint-sized analog/digital crossover synthesizer!

• Warm and rich analog soundsCrytal clear digital timbresVocoder and effectsEasy programming