via this auction
"he Dave Smith Instruments Prophet '08 is a tabletop "knobby" synth module with all of the features and controls of the Prophet '08 Keyboard (minus the keyboard, of course) in an even more compact enclosure. With real analog oscillators, famed Curtis low-pass filters, and analog VCAs, the Prophet 08 Synth is capable of reproducing the familiar sounds of its legendary predecessors. But modern features like a greatly expanded modulation matrix and additional modulation sources-like three envelopes and four LFOs per voice — take it way beyond the vintage — ear and make this a worthy and unique addition to the Prophet family tree.
The Prophet '08 Synth Module features a gated 16 x 4 step sequencer, arpeggiator, split or stacked key modes with separate stereo outputs per layer, and rack ears for optional rack-mounting. The Prophet '08 module can also be used as an expander to increase the polyphony of another Prophet '08 — keyboard or module — to 16 voices."