How can I ADD guitar feedback?

Vibe It! Holy Shatner! This thing works great. Special thanks to Ashcat for this tip. The cables on the Vibe It are a bit on the short side, so there are some constraints in terms of how everything is physically set up but I don't think it would be too hard to splice in a bit of extra wire if necessary. Stoked!

Someone else already said it, but it's true: Amplitube is probably built in such a way that it REDUCES feedback. It's not optimized for getting that sound. It's like swimming upstream. You might as well try a different method. I would run your guitar through either A) a CHEAP nasty distortion pedal that's very hot (think a Boss DS-1). OR B) a nice, PRICEY distortion pedal that's really hot. I recommend the MXR M116. It IS a bit expensive, but it gives me the most outrageous feedback I could ever ask for. You can't beat real, analog pedals for tone. Get the excessive feedback you want using a non-digital pedal and then use plug-ins to tone it down and adjust your levels. It's much harder to create good, sexy feedback than eliminate it.

What about using the Routing Matrix??? Could be intense!! Probably want to control it heavily... E.G. Limiters, Compressors