Ultra-useful Device for Studio or Stage In the studio or on the concert stage, the Black Lion LS-4 is one of those devices that can make a world of difference — once you see what it can do, you'll wonder how you ever got along without one! This discreet, concise line selector lets you connect a stereo source and then send it to up to three other devices. You can send the same source signal to all four destinations simultaneously or in any other possible combination. The possibilities are enticing. For example, passive monitor switching with subwoofer toggle, headphone distribution, parallel effects routing, and beyond; plus, since it's a totally passive design, it won't color your tones whatsoever. Finally, with a steel enclosure and an anodized black aluminum faceplate, this unit is ready for the road.Monitor controller As a monitor controller, it's hard to top the Black Lion LS-4, especially