The Coleman Audio TC4 is a DAW monitor controller for any studio or mastering facility.
The two balanced stereo inputs, have a passive signal path through a 47 position stepped attenuator that tracks to .05db. This will maintain the stereo balance at any level and feeds the mains or alternate balanced speaker outputs. There are four balanced stereo inserts in the signal chain with relay switching to keep the signal path as passive as possible. This makes A/Bing compressors, limiters, EQ or any effect as easy as pushing the button to insert the piece of gear. The Flip switch reverses the order of insert 1 and 2 so you can A/B which comes first, the compressor or the EQ, try doing that with a patchbay. The mono switch sums the stereo signal to mono in the speakers only not the mix output. The phase reverse switch flips the phase on the right speaker output, and when used in conjunction with the mono switch will give you a left minus right so you can work on the side channels (hard L or R signals). There are L and R mute switches to isolate the speakers and help focus on the side channels. The PRE/POST switch allows a comparison between the original audio signal and the processed audio signal. The Master Output signal has a completely passive signal path from start to finish, except of course for the insert devices, and makes it easy to print the final mix. A powerful engineers headphone output with it's own level control, to check mixes up close, and a balanced stereo meter output so you can watch your levels rounds out this 1U monitor controller.