The RM67 is a single rack space mixer designed for the install/contractor market. The unit mixes three balanced microphones with four stereo sources to mono or stereo balanced outputs. The XLR Microphone Inputs have Mic/Line level switches, a send/return Insert jack, and individually switchable +12 VDC phantom power. Priority talkover, with variable Duck Sensitivity is available on one microphone for paging, and on one Source input for use on a jukebox. telephone system, etc. Each Microphone input has a level and tone control, and each Source input has a level control. Bass and Treble controls have been provided for all the sources, and a Master Output Level control adjusts the level of all mixed signals. Source One has an added front-panel 3.5mm input. A pre-Master RCA output has been provided for recording, and a Remote Volume output jack is provided for connection to a 100K ohm linear taper potentiometer and used as an external master level control.