PCB function
1
、
PCBA includeINPUT1/INPUT2/INPUT3/INPUT4/MUSIC1 Analog signal
input preamplification
2
、
Bluetooth audio signal decoding and amplification circuit
3
、
Mixed audio signal amplifier circuit
4
、
Sine wave/clipping signal LED indicating control circuit
5
、
TONE/HPF/MASTER VOLUME CONTROL
6
、
USB MP3
Audio decoder control circuit
