it's definitely a Digitech pedal of some sort. It looks like it's from the same family as the RP100 guitar multi-effects type I bought about 12 yrs ago for $99. It also has an expression pedal built in, which obviously doesn't get used since its 6 feet off the ground. Just cant imagine what he uses it for, but it's always there, propped upright, with 2 cables plugged in to it. It doesn't blend well with the $12,000 bass.