Passive Tone Board Amplifier Preamp Power Module Low High Sound Adjustment XH-M802 Electonic DIY PCB
Product Description
This tuning version of passive tuning board, the main function of the input audio signal for high and low frequency adjustment, and then sent to the amplifier board to enlarge
The principle of the product is that the audio signal is directly filtered through the RC filter to get the desired high and low sound through the RC capacitor. The tone board does not need power supply, but the volume after processing will be much smaller.
