Line/Mic (LMM1S, LMR1S), Line/Mic level input modules. Gain control. Bass & Treble controls. Actively-balanced input. LINE/MIC Attenuator switch. Gating w/Threshold & Duration. 24V Phantom power supply. 4 Priority levels. Bus assignable. Built-in limiter w/ LED (LMR1S). Remote control volume option (LMR1S). Single-gang remote control panel