His guitar sound hits a Boss Chromatic Tuner, then a Cry Baby volume/wah pedal; he uses a multi jack pedal that is linked for his distortion pedals (a Electro Harmonix Little Big Muff Pi Distortion and Boss Hyper-Metal) Hendrix Edition Blue Circular Flanger Stomp Box (he used to have a Boss Flanger instead), Gretch Super Chet Phaser (with built-in compressor), Electro Harmonix Chorus, Boss Digital Delay DD-5, Boss Equalizer. In studio, he used all sorts of amps, mainly Soldano and some Mesa Boogie stuff. In concert, he nowadays uses two Soldano Hot Rod 100 heads (one for clean sound, one for distortion) with four customised Marshall 4x12 cabinets.

best bet is to go for the Big Muff and a DS-2 i think, you should have a broad spectrum of all his tones from them.