SM Pro Audio M-Patch 4M - Passive Monitor Controller with Talkback

The M-Patch 4 from SM Pro Audio is a passive volume control/switcher that is designed for monitoring and recording setups that require talkback. The unit is an ideal all-in-one solution, performing tasks that include monitor control with mute, mixing, level-matching, headphone monitoring, stereo- to-mono summing, and talkback. All of this is done without adding any coloration or noise due to the controller's 100% passive circuitry.