How many outputs does an ASR-X Pro have? I used to have an ASR-X back in high school. And yeah, people do sleep on those. The sequencer isn't as good as the MPC but the filters!!!! Jesus you can really mangle some samples (in a good way) on an ASR-X!
Anyway, about your mixer... any noisy pots? Blown channels? Any issues other than the knob?
I am seriously considering getting this but the only reason why I am hesitating is because I have a bid up on ebay for a 14 channel Soundcraft USB mixer and I'd honestly rather have that, but if that falls through I'll be buying this. There's only like 2 days left on the auction so I will let you know asap. I've been without an audio interface for a little while now and it's driving me nuts.