[quote name='shippo' post='1252614' date='Jun 1 2011, 12:58 PM']The Zoom B2.1u seems pretty good from what I've seen online so far, but how is it in a live scenario? How do you turn a pedal sound off and on? From the online videos it looks like the left foot switch goes down the bank of sounds and the right foot switch goes up the bank of sounds?
Also how many combined sounds can you use at once?[/quote]
You basically have to set up a series of patches, and each one of these patches has one or more (or none) of the effects modules activated, with your settings saved. Then you switch up and down the patches. If you set every other patch to a "core sound" it makes it pretty easy to use in a live setting.
It has a couple of drawbacks - I don't think you can use the synth and drive modules at the same time for example. It's worth having a quick read of the manual, as you'll HAVE to if you buy one.