Review on 🔊 DGZZI 2PCS Super Mini PAM8403 DC 5V 2 Channel USB Digital Audio Amplifier Board Module 2 3W Volume Control with Potentiometer Switch by Katherine Peterson

I connected the speaker and input connections to the board with 20 AWG wire. I then connected the 3.7v 18650 lithium battery and case. Plugged in speakers and laptop output. Turned it on and everything worked. I cut the wires to the battery compartment and added a 2.1x5.5 male and female connector. I turned on the amp and all I heard was a continuous click. I removed the plug and connector, reconnected the wires. Same, click when it's on. That's the amp, not my connections. Today I connected the 2nd amp using 2.3 and 4 pin JSP headers soldered to the board and used 2.3 and 4 pin sockets for input, output and power connections (lithium battery 3 .7V). Nothing really happened. I will return them for a refund.