Mute control instructions:
M is the silent control terminal, which is silent at low levels and operates at high levels (control voltage can range from 3v to 24V). It is equipped with a short-circuit cap, which is assumed to be in working condition when shipped. When silent control is needed, remove the short-circuit cap and connect it for external control.
There are two signal input methods that can be selected as needed:
1: Signal balance input (differential): signal+, signal -,
2: Unbalanced input (single ended): Short circuit the – end to GND (ground), and input the signal from the+end.
Attention: When using unbalanced input, be sure to short-circuit the “-” and GND connection, otherwise the sound may be abnormal and the chip may be burned out in severe cases.