The D-RC type remote audio mixing controls provide user-accessible volume knobs for 2 or 3 sources. Each control is available with level controls only, or with level controls plus a muting button for each channel. They function exactly as a mixer without the need to send audio to and from the remote location. A rear-panel RJ45 jack provides the connection for standard twisted-pair wiring between the remote control and an RDL remote-controlled mixer. The cable sends the knob position and muting status data to the mixer. All audio signals remain local to the mixer, which uses VCA technology to set the mixer levels.