1984 Roland GR-707 Synth Guitar And GR-700 Synthesizer

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Roland GR-707 Synth Guitar with GR-700 Guitar synth, cable and OHSC! Some foot buttons loose (edit has some damage to one clip side) but functioning properly.

The Roland GR-707 with GR-700 is a mid-1980s guitar synthesizer system combining the futuristic GR-707 MIDI-capable guitar controller with the GR-700 analog synthesizer module, offering one of the most advanced guitar synth setups of its era.

Type
Guitar synthesizer system (controller + synth module)

Model
GR-707 guitar controller with GR-700 synthesizer module

Manufacturer
Roland Corporation

Country of Manufacture
Japan

Year of Introduction
1984

Pickups
Roland hexaphonic divided pickup (GK-series) for independent string tracking and pitch-to-voltage conversion

Controls (GR-707)

• Synth volume, guitar volume
• Patch up/down
• Hold, program change, and tuning switches
• Onboard LED display for patch number

Input (GR-700)

• 24-pin proprietary Roland guitar synth cable from GR-707
• MIDI In (for external control)

Output (GR-700)

• Stereo 1/4" audio outs
• Mono audio out
• MIDI Out/Thru

Notable Features

• GR-707 guitar: Distinctive futuristic double-cutaway design with stabilizing arm to reduce neck flex; maple neck-through with graphite reinforcement for tuning stability; playable as a regular electric guitar via standard output jack
• Synth engine: GR-700 is essentially a Roland JX-3P analog polysynth adapted for guitar control — 6-voice polyphony, 2 DCOs per voice, resonant low-pass filter, chorus, patch memory
• Polyphonic pitch-to-voltage conversion allows chords and complex harmonies
• MIDI-equipped for external synth triggering (a rarity in early guitar synths)
• GR-700 front panel includes full synth programming access identical to the JX-3P layout
• System was marketed as a premium, futuristic alternative to conventional guitar rigs, aimed at session players and experimental guitarists

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