In case anyone wants to know...
For his 2009 tour Robin was using his Fender Custom Shop Signature Stratocaster into a Fulltone DejaVibe 2, Fulltone Wahfull, Fulltone Clyde Standard Wah, Fulltone Full Drive, Fulltone Robin Trower Overdrive and Boss TU-2 Chromatic Tuner into two Marshall Vintage Modern 2466 heads. (From Wikipedia)