The GR-700 is a stomp-box guitar synth with the same synth engine as the JX-3P. The G-707 is the flashy guitar controller which connects to the 700 via 24 pin cable. On the 707 guitar are knobs for the cut-off edit and LFO modulation! So now you can play synth sounds with the guitar instead of a keyboard. Sound-wise it's a pretty good synth. You will need the PG-200 programmer if you want to edit patches more easily. Recall patches by stomping on the foot pedals.
The GR-700 is a six voice polyphonic with two DCO's per voice which means analog oscillators and sounds with digital stability and control. The typical assortment of a resonant lowpass filter, ADSR envelope, LFO and oscillator sections are here with easy and straight-forward programming. The GR-700 and G-707 are used by Cirrus, Tim Skold with MDFMK, Amir Derakh of Orgy, Charlie Singleton of Cameo, T.G.Noyes, King Crimson, Sigue Sigue Sputnik, and Andy Summers of the Police.
Polyphony: 6 voices
Oscillators: 2 DCO's per voice
Memory: 32 preset, 32 user, 64 on memory card
Filter: Resonant Low pass
Keyboard: 11 foot pedals
Control: MIDI (out only), G-707 guitar controller