Product Information The Rechargeable Amp Power Pack offers a convenient reusable power solution for select Roland mobile amplifiers that support battery operation, including the CUBE Street EX, AC-33 Acoustic Chorus, and other models. The one-piece design pops easily into the back of the amplifier, eliminating the need to fuss with multiple AA-size batteries. But the benefits don’t stop there—you also get up to twice the runtime over standard batteries, and the amplifier delivers output power and SPL that’s nearly equivalent to using the AC adaptor.* Specifications SPECIFICATIONSPower SupplyAC adaptorOutputVoltage: DC 9.6 VCapacity: 4,000mAhIndicatorCHARGEFAILConnectorsDC IN jackBattery charging timeApproximately 4 hoursExpected battery life under continuous useApproximately 20 hours[CUBE-STEX : OUTPUT POWER switch: NORMAL (Maximum power output: 25 W)]* These can vary depending on the conditions of use.AccessoriesOwner's ManualApplicable ModelsCUBE Street EXAC-33AC-33-RWKC-220* Use the amplifier accessory AC adaptor(PSB-12U).BA-330* Use the AC adaptor(PSB-12U) (sold separately).Options (sold separately)AC adaptor (PSB-12U)SIZE AND WEIGHTWidth184 mm7-1/4 inchesDepth68 mm2-11/16 inchesHeight41 mm1-5/8 inchesWeight (including battery)690 g1 lb 9 oz