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Amazon.com: HQRP AC Adapter Compatible with BOSS DR-770 DR-880 Dr. Rhythm Sound Generator, SP-505 Groove Sampling Workstation, JS-5 Jam Station, Power Supply Cord Transformer : Electronics
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Amazon.com: ABLEGRID Ac Adapter Fit for Boss DR-770 DR-880 Dr. Rhythm Drum Machine Roland Replacement Switching Power Supply Cord Charger : Electronics
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