“Great little amplifier and a great sound from a small speaker. The 'volume' pot is fiddly to set so I used a divider on the input to the amplifier to make adjusting volume simpler. I recommend additional capacitor across the the power rails (100uF will be enough as it can create spikes - especially if you're drawing power from the PICO.”
“Tiny little mono amp that works well. Using the PWM pins for sound via a Pi4, through the amp and a speaker from a laptop. Sound is surprisingly good. There is a small pulse that can be heard through the speaker so think I will need a small circuit to regulate the current.”