This machine mainly consists of front-end amplification, feedback suppression, noise reduction, AGC automatic gain, and back-end amplification. Applicable microphone: Interface microphone (5V, 48V), wireless microphone Implementation function: Teacher end long-distance pickup and amplification (with one click mute)

Applicable scenarios: Multimedia classrooms, small conference rooms

Manufacturing process: The exterior adopts profile panels and steel casings, while the interior adopts imported SMT surface mount technology, wave soldering, IC digital power amplifier, ring transformer, and symmetrical power supply design; Low noise, low distortion, manual debugging, intuitive and simple, efficient and stable performance

External settings: There is one power on indicator switch on the front panel, and the rear panel is equipped with six microphone interfaces, RS232 interfaces, three sets of line input interfaces, one set of line output interfaces, and two speaker wiring terminals.