I just picked up an Aerosmith CD recorded in 2005 called "Rockin the Joint" recorded at the Hard Rock in Vegas I'm absolutely loving Perry's tone on this CD. The CD gives thanks to Alessandro and /13 amps. I think Whitford is using the /13, so is Perry using the Alessandro? HE also has a ot of Gibson Goldtone cabs up there so it's hard to determine what he is playing through.