SM Pro Audio shows off its Nano Patch, a passive volume controller. It's a compact unit with two channels in and two outs. According to the SM Pro Audio rep, "You can't control your speakers from the back anymore, this is the way to do it." Why does he say that? Check out the video to learn more. It's the era of micro-technology passive control, baby! Direct from the floor of Winter NAMM 2007, Gearwire's Rob Warmowski asks the questions, and gets the Nano Patch scoop.