MATRIXSYNTH: CASIO DG-1 Digital Electric MIDI Guitar
Bob Weir | Casio, c. 1987, PG-380 model guitar with custom Modulus neck | From the Vault: Property from the Grateful Dead and Friends | 2021 | Sotheby's
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Great Craigslist find, the Casio DG-1. Questions in comments. : r/synthesizers
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