I've had the mixer a couple of days, and here are my niggles so far. Only two stereo channels. No gain controlled stereo effects send/return. The effects loops with gain control are mono only. There is a global effects loop (compressor is suggested), but it's sort of all or nothing. They have an expander that adds two stereo channels, but only one expander is allowed. To get mutes you have to buy another additional module. So with the two expansions you are another $350 in, and at 56HP. This thing draws a full amp of power. Lets face facts here, any Eurorack mixer must be a compromise with the space limitations. I think WMD did a pretty good job, and there is a lot to like. It would be nice to route various stereo sources (Ensemble, Cloud Terrarium, Clouds, Plaits, Rings and Morphagene all have stereo) through Magneto, Mimeophon or FX Aid in varying degrees. Ah well, it's not a perfect world.