Boss PSA-120S Power Adapter

Fits perfectly, zero hum, no issues whatsoever. Bought and returned a third party adaptor previously that didn't fit and hummed like crazy. OEM has always been the best bet for me.

By coincidence, I got both a Boss looper and ME-80 multi-effects unit at about the same time. Roland has cut corners (oddly) lately by designing everything to run on battery power--good--but also being able to run on their "optional" PSA AC adapter. Which is $30. I bought a cheap after market compatible adapter for the looper at a third of the price, and this for the ME-80. Both work flawlessly and I can't tell the difference sound-wise. Is this one worth three times the price? I don't know. But I admit I worry a bit less about it, even though they both say "Made in China". This one is clearly better built and shielded...

It’s great, has high quality, easy to use and powers the pedal nicely. But the price… WAY too much for just a power cable. I will be returning this to buy a pedalboard power supply.

I bought this power adapter to power my Roland SPD:ONE WAVE. I use it for live performances, and it has not let me down. The length of the cord is just right, and I always have plenty of slack, even when the power plug is relatively far away. It fit perfectly and snug in the sample pad, and it has not fallen out. They box is a little weak, but that might be user error. I was in a rush when I was first unpacking it, so I must have pulled too hard and ripped it, but it's not really a big deal as the power adapter itself comes in a plastic bag. If I ever need another one, im coming right back here to buy it again. Highly Recommend

This power supply is highly recommended by BOSS and users as providing high quality, clean power. There are several aftermarket alternatives at far lower price but I have read that several do not provide a clean power signal and can damage guitar/bass effects boxes.

Does what it should and no problems. The ONLY reason it doesn't get 5 stars is because I don't know how long it'll last.

My cool new Boss SY-200 had audible line noise. It was daisy-chained on a 2-amp wall adapter, with a Mooer Red Truck multi-pedal and a Boss CE-5 chorus pedal. I figured the noise might go away if I gave the SY-200 its own power, and sure enough this adapter does the trick -- the noise is gone, baby. Yes, it's pricey, but it has that nice current protection feature, and hey -- does saving ten bucks matter, for a $300 pedal?Specs: This adapter is 500mA. The SY-200 draws 230 mA, so there's power left over for analog pedals, if you want it -- but watch out for noise.Bottom line: plenty of power for the Boss SY-200, and it cleaned up the line noise perfectly. A digital pedal needs isolated power, period.Update: I bought more pedals (who doesn't?), and upgraded to the Ghost Fire GP8-SV2 isolated power supply. It words perfectly, despite my reservations about lack of warranty (see my review).

If you want a great single 9 volt power supply for your pedal , that doesn't make your amp whistle or make other noises .. And don't wanna drag out the iso brick .. this is it ..