Roland R-8 Human Rhythm Composer
One of the very best drum machines ever. It has excellent sounds which can be expanded by adding additional sound cards (808 and 909 cards). Great rock, electronic, ethnic and industrial style drumkits! Most of the sounds are editable - tune, decay, attack, nuance, output, etc...
The R-8 features velocity- and pressure-sensitive trigger pads, and the ability to create loops of beats. The device has eight individual audio outputs, 12-voice polyphony, and four-part multitimbral MIDI.
Comes with AC adapter power supply and 230-page owner's manual.