Boss PSA-120S Power Adapter

Well made and will work with some non-Boss devices too (see measurements I provide in the review) I purchased this to save batteries on my , which has a healthy appetite for them. I did consider a few after-market supplies, but opted for this one because I felt it was a safer choice.This will work with any 9 volt DC device that consumes up to (but does not exceed) .5 Amps. To make sure this is right for a non-Boss device check your connector receptacle. The male barrel connector…

Overpriced and not made well

Don’t scrimp on good power adapters I bought this adapter for use with an old roland mixer(MX-5). The universal adapter I was using with it (PowerLine 600mA) caused the mixer to emit a high-pitched buzz (not 60hz hum) especially when the mixer is set to high levels. The buzz disappears if the mixer is run on battery.I searched for alternative adapters and found several that were cheaper than the psa-120s. However, on the pictures I saw that the psa-120s seemed to have a ferrite core(?) which function I’ve read is to filter…