Accessory USA AC Power Adapter Charger for Boss ME-25 ME-50 ME-50B ME-20 ME-20B Pedal Roland Products trademarked Accessory USA are marketed and sold exclusively by Accessory USA Store. Warranty:30 days Money Back Promised/60 Days Free Exchange With Paid Return Label/365 Days Anytime Worry-Free Warranty!**100% MONEY BACK GUARANTEE !! IF OUR PRODUCT CAN NOT WORK WELL** Output : 9V 1A