... gain control 4.thd:less than 0.05% Karaoke Audio Mixer with Power Output Amplifier Specification: MAX level input19db(1kHz, ... Performance RatioØ Easy installation, it can replace the traditional analog mixer directlyØ Portable and stylish designØ Comprehensiveafter-sales service, zero ... , conferences, schools, intelligent buildings and personal studio Karaoke Audio Mixer with Power Output Amplifier