JonDent - Exploring Electronic Music: Boss (Roland) DR-670 Drum Machine.
SOLD! Used Boss DR670 Dr Rhythm Drum Machine
My Boss DR-670 had a “BAK BATTERY LOW” error, and the manual said take it to an authorized repair dealer. Fourteen screws later, and I find a common CR2032 battery. Why don't
Free Audio Service Manuals - Free download BOSS DR 670 SERVICE NOTES
Boss DR-670 Dr. Rhythm Drum Machine MIDI Digital Used with Manual from Japan | eBay
Boss Dr. Rhythm Drum Machine (DR-670) W/ Manual Tested/Works | eBay
Boss DR-670 Dr. Rhythm Drum Machine | Reverb
DR-670 Dr. Rhythm - Boss DR-670 Dr. Rhythm - Audiofanzine