As far as I'm aware, Bill, Andy played either his Ibanez Artist or a tobacco sunburst Les Paul through an MXR chorus into a Marshall half stack, which I think might have been the first of the Master Volume (JMP Master Lead MkII or whatever they're called) ones which, after largely cosmetic changes, became the JCM 800's. (I mainly use one of the 50w 2x12 combo's of that ilk, the same type beloved of John McGeoch of Magazine and Scott Gorham out of Thin Lizzy). But I could be wrong........
I think I have also seen Colin using various basses (Fender Mustang, Precision and the legendary Epiphone Newport) and I have seen HH amps, amongst others I don't recognise/get a look at.
Dave always seemed to use a Strat or Tele through Marshalls similar to Andy, don't have any idea about effects pedals.