I'm looking for a rackmount effects processor that can act like a stompbox, play multiple effects at one time and have a Wah pedel that can be controlled with a MIDI Pedal board. I really like the Rocktron Xpression but I didn't notice a Wah. I also looked at the TC G-Major but same thing no Wah, at least I didn't notice one that can be controlled with an expression pedal. Any suggestions????