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File:Roland GR-30 Guitar Synthesizer.jpg - Wikimedia Commons
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ROLAND GR-30 GUITAR SYNTHESIZER W/13 PIN CABLE & POWER SUPPLY
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A Tale of Two Guitar Synth Rigs: Roland GR30 + GR-D + GR-S versus Roland GR55 + Boss GP10 | Peter E. Earl -- Eclectic Real-World Economics
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