ART POWERMIX III 3-Channel Personal Stereo MixerYou need to connect a CD player, a synthesizer and the line output from a bass amp to a tape deck: use a simple stereo mixer. The PowerMIX III can accept either mono or stereo signals and mixes them down to stereo or identical L R mono signals. Additionally, the PowerMIX III provides a headphone output with its own level control. Plug the AC adapter into the 12V DC input on the PowerMIX III and plug the other end into a 120V AC wall socket. Plug your