Honestly, I am not sure....I took the photo for the wiring example and didn't pay attention to what it was. It sure looks like a preamp, but I can't be sure. If you email them the photo, and tell them it was in the glass case at the show, I am sure they can tell you.The one that was open on top. It was in a 2 space rack encloser with no power tubes.
Looks like you kept busy! Great photos.
I think the turret board pedal was a custom pedal, but he said some of their regular pedals use the same setup. Having cast standoffs in the boxes is way cool, they are really well designed. The cost is pretty high for something out of asia, but they are pretty cool and sounded great(in the noisy show).
I might get one to check it out.