Cosmix Pro from Cosmotronic is a professional mixer solution for Eurorack that features four mono channels and two stereo channels with two Aux sends and a return. Similar to the original Cosmix, the Pro version gives us a little more space with the same amount of channels, and removes the saturation controls in favor of a clean signal. Two Aux sends make signal routing a breeze with channels 1–4 having their own mono Aux send and all channels 1–6 have a control for the stereo Aux send—a stereo Return makes it easy to keep everything in one place. Square console mute buttons make the Cosmix Pro feel like a miniature console with their gentle backlighting. CV inputs over the stereo channels' (5 & 6) Panning adds even more options for movement to your patch. Other handy features include LED meters for all channels and the master, switchable high pass filter on mono channels, and a switchable gain boost on the stereo channels. If you're looking to compose entirely in the rack, you need a high quality mixer and Cosmotronic's Cosmix Pro is a candidate to consider.