I've been wondering about this since 2004. In the live performance of "I Know You're Here" on the 2003 G3 DVD, the 12 string guitar on his triple neck makes this unbelievable sound. I want to know if this is possible on the Axe FX II. I can't tell what kind of effect this is, but it must be something on his Eventide processor. I don't have an Axe FX yet, but I'm coming up on the wait list very soon; possibly tomorrow (not that this effect is a deciding factor).