LM386 200 a gain; audio amplifier module

1.On-board chip LM386
2.200 gain of the circuit design
3.On-board speaker wire holder
4.10K onboard adjustable resistance, can be adjusted to amplify the volume
5.Onboard power indicator
6.Main chip pins have been drawn, you can directly input audio signal
7.Working voltage: 5 ~ 12V
8.Board size 41x13mm
Audio Amp Module Note:
1: Do not reverse the positive and negative power supply voltage can not exceed 5.5V, these two violations would have led IC damage.
2: On-chip high-gain buffer, the board can not change any component parameters do not meet the parameters will result in IC damage.
3: Try using the line input cable with shielded, can play a role in immunity, eliminate clutter current sound.
4: cmos tube BTL output drive mode, the speaker can not be negative about together, that is connected to the speaker's four lines are completely independent, does not allow total access!