https://www.ikmultimedia.com/irigstompio/
Watch Alex Skolnick (Testament, Alex Skolnick Trio, Metal Allegiance) use iRig Stomp I/O floor controller and audio interface with AmpliTube for iPad.
iRig Stomp I/O is a brand new type of USB pedalboard controller that integrates a professional, high-resolution, MFi certified audio interface with MIDI input/output for iPhone, iPad, Mac and PC.
It comes bundled with state-of-the-art guitar, vocal processing, and recording software for flexibility and usability, both live and in the studio. https://www.ikmultimedia.com/irigstompio/