Boss Stereo Enhancer EH-50, AC Adapter BRA-100 Used previously for recording. Can also be used for bass and guitar. Operation has been confirmed. I was able to confirm the On/Off of each switch in Enhance Mode and the enhancer switching. I was able to confirm sound output from both Stereo Out and Headphone Out. There was no scratchiness in the volume. In perfect working order. The AC adapter seems to be trading at a high price. Please consider this item as used. Please judge the condition from the photos. It will be shipped in a recycled cardboard box and air-packing. Only the main unit and AC adapter are included.