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Published on Jan 1, 2010
You can power your boss ACA pedal in the following ways: 1. Internal 9v battery. 2. 12v power supply (negative tip!) 3. 9v power supply with pedal daisy chained to another (or multiple) pedal(s). YOU CAN NOT power your pedal with a 9v power supply (on most ACA pedals) with the pedal standing alone, not daisy chained.