PIcked one up - very late to the party, I know.
It's a real nice piece of kit, the A channel is really blooming the sound up, the passive Bass/Treble controls are quite efficient and not everbearing when everything is on 10.
Spend a good hour trying to dial a nice tone with the B channel and the Hot Cold Fusion, but none were satisfying sadly. Being incredibly Anal with the Dirt sound, it's no surprise. It's a shame though 'cuz I really wanted this one to work and be able to just bring this to gigs and voilà. Definetely worth the price seeing the quality and possibilities, definetely not worth it for me to only use one channel.