Offering a convenient resuable power solution for select portable Roland amplifiers, the Rechargeable Amp Power Pack from BOSS delivers increased runtime as well as higher output power and SPLs than standard AA batteries, reaching power performance nearly equivalent to an AC adapter. This power pack fully supports the CUBE Street EX, AC-33 and AC-33-RW Acoustic Chorus amps, KC-220 Stereo Keyboard amp, and the BA-330 Stereo Portable amp.

The one-piece design easily pops into the back of the amp, eliminating the need to fuss with multiple batteries. The safe, reliable, and efficient NiMH (Nickel-Metal Hydride) battery sports a premium design for long-term dependability, and can support direct charging with the included AC adapter on most compatible amplifier models.