The thing is really sweet, has over 400 types of presets, 150 watts, you can use pedals with this, but don't have to since everything is built right in. Very cool system. This link talks all about it. I bought it a few months ago at Axe Music...I walked in to buy a pedal and walked out with that. I honestly have a couple hours on the thing, my hands just cannot play guitar anymore.
http://line6.com/spideriii/150.html