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The Radio Shack power adapter for my Dr. Beat has finally crapped out and was wondering where I can get a new power adapter for less than what most outlets want for the Boss PSA series adapter. My DB 90 doesn't give any indication of positive or negative pin or voltage, so I'm looking for recommendations. Thanks.

9v center negative DC 5.5mm x 2.1mm at least 300mA.

Anyone who plays guitar probably has 20 adapters that will work in their closet as it's the most common size used for guitar effects pedals.

Here you go:

http://www.ebay.com/itm/Boss-PSA-Series ... SwARZXo5i0" target="_blank

I found an off brand adapter to try out, we'll see how it goes