The Factor Electronics X-66 app is the perfect way to control your X-66 multi-room audio system from your iPhone, iPod Touch or iPad.
The X-66 app provides complete system control of 6-18 rooms of audio including independent control of volume, source, treble, bass, balance, mute and some additional features like room labels, source labels, all zones on and all zones off. The latest X-66 app also provides a party mode feature where all rooms can mirror the room you are currently in for whole house audio control.