Huain 4-Zone Preamplifier Power Amplifier Audio Conference System HY-GD36S:

Two microphone inputs, two line inputs, and one auxiliary output;
– Treble and bass tone control, and master volume control;
– Four-zone selectable output;
– Microphone 1 features a mute function for convenient priority broadcasting;
– Independent volume control for microphone and line inputs;
– Automatic dual-speed temperature-controlled fan for forced cooling;
– Comprehensive output short-circuit protection, as well as over-temperature, over-voltage, over-current, and DC output midpoint protection;
– 100V/70V constant voltage output and 8? constant impedance outpu