TW410: Repeatedly tested special customized human voice frequency characteristics of the microcontroller; Gao Baozhen Mimin greatly improves the sound quality effect to restore people's true sound, keep the sound smooth and clear; 95%of guests who buy this machine are used on stage performance wedding performances, webcasting, conference teaching, etc.! The inner record output is very good, no noise, no current, no current; fine workmanship; the effect of hotel stage use is great