Strange question - I'm setting up a rig in a new facility, and signal strength from the stage through the house snake to the booth is extremely weak. Wireless mics are giving me a stronger signal than wired mics, and I'm wondering if the runs are too long, or if something else strange is going on. I've heard a few industry types mention amplifiers for the lines - can anyone chime in with some experience with these? Is there a specific cable length where they should be used? Brand names to look for?