SM Pro Audio gives us a look at its M-Patch 2 passive controller, plus the PM8 passive mixer. Don't know what the hell passive control and mixing means? Fear not, the video quickly explains it. From the mouth of the SM Pro Audio rep, "In digital audio, you want to have passive control at the end of your chain." Get a good look at the M-Patch 2 and the PM8, and a little passive control tutorial in Gearwire's video from the floor of Winter NAMM 2007.