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BOSS Synthesizer SY-1 Blue guitar Bass Multi effector Audio equipment. 4 Pictures about BOSS Synthesizer SY-1 Blue guitar Bass Multi effector Audio equipment : BOSS Synthesizer SY-1 Blue guitar Bass Multi effector Audio equipment, Yamaha SY-1 Service Manual and also Boss SY-1 Synth Pedal - Excellent Condition! Incl original | Reverb.

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