Send your stereo audio signals well beyond the limits of copper using long haul fiber optics at an incredibly low cost. Plus, using fiber optics delivers your sound free of hum and noise typically introduced in traditional copper cable setups. The MAO-3AB-DFB sends left and right stereo audio signals up to 20 miles, though you probably don't need to go that far, but it can still make it happen at a super low price. Add a Camplex Tactical grade ST Cable and you have the perfect option for live event and location audio extension in a military grade ruggedness.