VINTAGE ROLAND (BOSS) OD-2 TURBO OVERDRIVE SERVICE NOTES FIRST EDITION

VINTAGE ROLAND (BOSS) PN-2 TREMELO/PAN SERVICE NOTES FIRST EDITION

VINTAGE ROLAND A-50 MIDI KEYBOARD CONTROLLER SERVICE NOTES FIRST EDITION

VINTAGE ROLAND PG-10 SERVICE NOTES FIRST EDITION

VINTAGE ROLAND PM-16 SERVICE NOTES FIRST EDITION

VINTAGE 80'S BOSS CHORUS CE-2/CE-2B SERVICE NOTES AND SCHEMATICS

VINTAGE BOSS DS-1 SERVCE NOTES 1978

VINTAGE BOSS DM-1 SERVCE NOTES 1978