Microphones (MIC1S, MIC1X). Transformer-balanced, low-impedance microphone input modules. Gain/Trim control. Bass & Treble controls. Noise gate w/Threshold & Duration. Limiter w/Threshold control. Limiter activity LED. 24V Phantom power. Mute send & receive. 4 Priority levels. Bus assignable. Balanced, transformer-isolated. Screw terminal (MIC1S); XLR connector