Just a heads up, the GT-10B does not have dual preamps. I bought mine to replace a POD X3L, and I used to play with a bass preamp on one channel and a distorted guitar preamp blended in from the other channel. On the 10B you can have one amp and that's it. I can't even see the point of the second channel if you can't put a preamp on it. I called Boss to confirm this and yep sadly it's true. Their whole marketing campaign centers around the amazing parallel chain ability, and it's pretty much a misleading lie. The GT-10 guitar pedal has dual preamps, so there seems to be no reason that the 10B does not. When you consider that compared to the 10, the 10B has less amp sims, less effects, less overdrives/distortions, and less wahs, the lack of dual preamps seems like a massive slap in the face. For more info have a look at the full thread on the Boss GT forum. If you are considering buying a GT-10B for this purpose, think again.