The device is implemented with three filters, for low, middle and high frequencies, three channels. The signal comes through an electret microphone, amplified by a preamplifier. 
Using the trimmer potentiometer, the input level is adjusted. 
At the entrance of each filter there is a trimmer potentiometer for adjusting the level of each color - for High Frequencies /Green/, for Middle Frequencies /Red/ and for Low Frequencies /Blue/. 
Each filter manages different color LEDs. 
- High frequencies /HIGH/ - about 3kHz - Green, 
- Middle frequencies /MID/ - about 1kHz - Red, 
- Low frequencies /LOW/ - about 200Hz - Blue. 
The device has three channels, three outputs that are controlled by MOSFET transistors. 
The device can manage up to 15 meters of RGB strip with 5050 LEDs. 
Supply voltage 12V DC. 
Included 1 meter of LED strip. 
Overall dimensions PCB - 86mm x 63mm (3.42" x 2.48"). 

This product has been assembled and tested. 

The appearance may differ from the one in the photo without changing the parameters of the product (This means that there may be a difference in the elements used (appearance, placement, color, shape or value)).