The Proficient Substation’s configuration and control app allows you to setup and control your subwoofer right from your smartphone. No more trips back and forth between the back of the subwoofer and the listening position during setup. Setup and correcting for acoustical room anomalies are just a button press away. Compatible Models: Proficient FRS-8 Proficient FRS-10 Proficient FRS-12 Proficient FTEQ-12 Features: - Volume Control - Crossover Adjustment - Phase Control - Delay Settings - Manual EQ - Auto EQ