Posted by Norm on 9/11/2009, 9:26 am
Well, likely not. But THIS is a really cool electric Steve Vai has introduced. Unlike Martin's McGuinn "double G-string," this one adds a "B" string below the wound "E." Here's a pic from our friends up in the Great White North (12th fret):
First: blue clicky-- http://www.12fret.com/new/Ibanez_RGT_1527_7_String_pg.html
I'm sure it could be adapted to by an acoustic (a Baritone guitar will have something like this in 6-strings).
Next, the photos: 
