Outlaw could tell you for sure very quickly. The Model 750 manual included a Radio Shack part number, but that part number is no longer available. The 755 manual specifies that you need an AC adapter rated for anywhere from 6V to 12VDC with a 3.5mm mini plug. For example, there is this 6V adapter at Radio Shack (the store will give you your choice of one connector plug free if you buy it in the store). There's also a 12V adapter and a few others in between.

------------------
gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review