The Extreme Extenders were designed to solve ADAT Optical distance limitations. In addition to extending ADAT optical interface up to 500 feet, the Extreme Extender ADAT In may be connected to the Optical output of any ADAT device, such as a DAW, Mixer, etc. and connected to the input of a Hear Back Hub. The Extreme Extender ADAT Out can be connected to the HearBus out of a hub to obtain two ADAT outputs.