Steve plays a Roland V-Drum set... it looks like he has an acoustic Yamaha bass drum in the setup, but i think there is some kind of trigger system mounted to the batter side head where the bass drum pedal's beater hits. in the 316 dvd, i think the acoustic bass drum and 2 "real" cymbals were just for show, since i never saw him hit any of them! (there's a stand-alone bass drum trigger right next to the acoustic bass drum).
Phil plays a Gibson Les Paul Custom into a Vox AC30. it looks like he has quite a lot of effects pedals too. he also plays a Roland XP-80 synth, which i think is actually used as a MIDI controller to control a computer with the sound patches already queued up to go for each song.
Barney plays the Gibson 335 or Gibson SG into some kind of effect processor into Vox AC30s as well.
Hooky plays Eccleshall 4-string basses and Shergold 6-string basses into an effects rack (with a footswitch control board) into a very large Ampeg bass rig.
Hooky's signature bass sound is a combination of his personal skill and style, the basses he plays, and some chorus and reverb/delay effects... from what i've read the chrous effect is from some kind of Electro-Harmonix pedal.