Thank you for viewing. This is a set sale of the BOSS BE-5B + BOSS ACA-100 power adapter. The BOSS ACA-100 power adapter is included. This can be used without any problems. Unfortunately, with the BE-5, I didn't notice any changes in the effects of the leftmost delay, chorus, and flanger. Therefore, I am selling it as a junk item. The other overdrive, 10-band EQ, and limiter seem to be functioning. There is some scratchiness in the overdrive LEVEL knob. Each footswitch responds and the lamps light up. Since it is old, there are many scratches and stains. Please refrain from purchasing if you are sensitive to the condition. I removed the panel film for the listing. I think it's in a clean condition. Please consider this opportunity. Shipping included.