This is an intersting, & very unique eq made for car(vehicle) stereo application or a home(studio) type sound system. I think it could even be used in a rack with live audio pa sound equipment. Its rack mountable, 31 bands, input/output, subsonic, bypass, & range. On the back it has (mic cable, & TRS) balanced inputs & outputs, RCA(in & out), ground lift switch, fuse, & what l believe is called a mosfet power supply input. I dont have the power supply, so youll have to track that down. This unit is untested but I know it worked when a friend of mine had it. Will accept best offer. Message or call: Three Zero Eight-Two Nine Three-Eight Five Three Zero. Local pickup, but well meet someone within reason. Cash only. Thanks