Karaoke Microphone Amplification: Preamplifier Board Module with Reverb Effect & Volume Control

This green preamplifier board features a silent power-on and power-off circuit alongside reverse polarity protection for steady audio operation. Built as a compact electronic module, it connects via a USB Type-C interface and consumes only 1.6 watts of power during use. 1. Constructed from a PCB, the unit operates reliably across an input range of DC 9V to 40V. 2. The dedicated silent switching design minimizes audible popping sounds during power cycles for cleaner signal transmission. 3. A USB Type-C port provides direct connectivity for straightforward integration into existing systems. 4. The package includes one preamplifier board and a set of accessories for immediate setup.