What is the best route to adding a USB power source to a guitar amplifier?

My girlfriend has a Fishman Loudbox Mini amp which has a 3.5mm auxiliary input on the back. She bought a cheapo bluetooth audio receiver that is powered by USB and outputs through its own 3.5mm jack. It works great but it takes up two wall outlets, and drastically reduces the distance it can be from the wall due to a short audio cable.

So I need an easier power source for the USB dongle. I had imagined a coupler that would sit between the amp and its power cable. I could frankenstein a USB-wall-outlet connector into this coupler to provide a USB power source close to the aux input. However it may be easier to find a 5V source inside the amp and just add a usb port. I'm not sure, which is why I'm creating this post.

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rickharris2 years ago

I don't know your skill level BUT if this were me I would mount a mains outlet socket on the amp - should be plenty of room inside. Then wire it to the amp input socket so I could use that for the USB supply.

I suppose you could put the USB supply inside the amp but USE panel mounted sockets are hard to come by.