This small regulated power supply module acts as a DC-DC converter. It is indeed able to take as input a voltage from 4V to 12V DC (5V DC on the Micro USB) and then output an adjustable voltage ranging from +/-8V DC to +/-18V DC. By default, the module is set to an output voltage of +/-12V DC. The module can be input either on a Micro USB connector (5V DC) or on solder contacts. The output is also to be soldered.

The quality design of the module, which includes low-loss inductors or high-frequency ceramic capacitors with very low resistance and connected in parallel, provides a clean and stable electrical signal, essential for precise and rich sound reproduction.