Alex Lifeson is one of the artists featured in 
The Modern Guitar Rigs: The Tone Fanatic's Guide to Integrating Amps and Effects released this month by Hal Leonard Publishing.
Showing players how to take their sound beyond  traditional tones and into the future, in this book Scott Kahn (editor  in chief of Musicplayers.com) explores topics of interest to guitarists  looking to build pro-level rigs whether they're playing clubs at the  indie band level, getting set for a major tour, heading into the studio  to record a new CD, or just searching for ultimate tone. The Modern  Guitar Rig explores advanced topics including:
• Rack gear: Multi-effects and dedicated signal processors, switching systems, foot controllers, wireless systems, and more 
• Amp setups: Rack-mounted tube preamps and power amps, stereo rigs, wet/dry/wet and other configurations 
• Guitar options: Piezoelectric pickups and splitting guitar signals to multiple amps 
• Tools for recording tube amps: power attenuators, dummy load simulators, direct recording options 
•  Virtual guitar rigs and modeled guitar amps in the studio and on stage  Each section and chapter addresses a different set of tools while  delivering rich detail, supported by scores of illustrations, and  describing a range of popular products for the contemporary guitarist.  Kahn also looks at the guitar rigs of pro players and analyzes how their  rigs are wired, configured, and controlled.
Thanks to RushFanForever for the headsup!