Just want to come back and say that this $10 volume knob definitely works with the DUDU7! Just hook it up to one of the USB connections, and it's plug-and-play. In addition to turning it left/right for volume up/down, you can also click it like a big button to mute/unmute, and if you hold it down for 2 seconds you can toggle the color-changing LED ring on/off. Finally, you can just get some foam tape or something to mount it where you want. Excellent! https://amzn.to/4giZsRJ
