New replacement power adapter for the Lexicon MPX100 effects processor requiring 1 amp. Check the receptacle input on your unit for details. If you need 1.9amp or more THIS ADAPTER WILL NOT WORK see our 2 amp adapter for older MPX100 models. Input 120VAC ~ Output 9VAC 1 amp. $7.95 for USPS Priority Mail to 48 continental US only.