Multi-function volume and tone shaper preamp with XLR output. - Model Name: BASS ATTACK - Brand: Hartke - Function: Volume and tone shaper preamp - Output Terminals: XLR output, line output - Switches: ON/OFF switch, Shape switch No adapter included (Operates on 9V) No box/instruction manual Sale of the main unit only There are scratches and dirt from use. Operation has been confirmed with power supply. From heavy bass sounds to trendy sounds, a variety of sound creation is possible. I liked it, but I am selling it to organize my equipment as I purchased other equipment. It will be wrapped in bubble wrap and then packed for shipping. Please check my profile. Thank you.