The ART MacroMIX four-channel personal mixer is ideal for connecting and mixing various consumer and professional units such as computers, CD and cassette decks, VCRs, synthesizers, and electronic instruments. Levels can be mixed and a headphone jack lets you monitor the mix. Connect your various signal sources to the appropriate inputs with unbalanced shielded cables. Channel one and two have dual left/right RCA inputs. With Channel three you have a choice of one 1/4″ or dual left/right RCA inputs. Channel four has a 1/4″ unbalanced input. There are four level controls, one for each channel. MacroMIX has dual left/right RCA output connectors and a 1/4″ line out/stereo headphone output jack. Features: input impedance 10K ohms unbalanced (all inputs); input gains: 32dB/26dB/26dB and 26dB; S/N Ratio >90dB; THD <0.008%; IMD (SMPTE): <0.008%; Power - 12V DC (adapter included). Dimensions: 5.625 x 3.75 x 1.75 inches. Weight: 2 lbs (0.91kg).