I presume the pictures are of the prototype? It's obviously a voltage-starved tube design (with Behringer style 'glow' LEDs), which avoids the safety issues surrounding mixing normal tube voltages with normal electronic circuit voltages, but doesn't get the best sound out of the tubes.

Obviously it's a 'none more black' concept for the control panel, but it really would benefit from some readable labels for the knobs and foot-switches. If I was buying one I'd like to see proper PCBs in production models rather than the prototype board used here, and I'd also like to see a much taller protection arrangement for the tubes. At present there's nothing to stop anyone putting their foot on the top of one and crushing it, or dropping something on it to the same effect. You really don't want broken glass everywhere as well as a defunct pedal. It's not an audiophile hi-fi amp that's going to be sitting on a shelf so that you can get away with such rudimentary protection. It's designed to go on the floor, and on a darkened stage, anyone could stand or trip over it.

Not at all sure why it's got a number of display boards inside, where no-one will see them. Again, this may be just the prototype, but if it's for 'tweakability' purposes, then maybe using a larger box, mounting them on the side and bringing any adjustment pots there as well would be a better solution. Asking untrained people to mess around on live pedal with screwdrivers is always asking for trouble IMO.

If it sounds wonderful, then great! But even so, there are issues that should be addressed before there's an accident and the designer gets sued.