This is a nice midi controller that I picked up from an online seller.  I took all the midi foot switch buttons and moved them up.  Below I installed foot switches to control a Peavey Mace guitar tube amp.  Now this pedal doubles as a multi-functional pedal. For this amp controller board I added a battery pack for the led indicators but it has a standard 9VDC jack. Now no AC/DC plugs are needed.

Here is a page link to their nice midi controller pedals.
https://www.actition.co.uk/usb-controllers