Robin Guthrie

In an interview on his official website, Robin Guthrie mentions using the Rivera M60 112 guitar amplifier.

Robin looks to be playing a Roland JC 50 with a rack mount FX unit on top of it in this video. It could also be a JC-60 but the Roland tag on the front looks to be that of the 50 released in 1978.

"Out of the harmoniser it goes to a delay, either a Boss or a Delta Lab one, about 250mS. I prefer the Delta Lab one, but Elizabeth likes singing through that so I often end up with the Boss. Then that goes into a Roland Dimension D, which splits up the signal into a lovely spatial stereo. I've been using that in studios for years, it's like a subtle phasing, nice and sparkly. Out of that it goes into two Bolt combos, a 30 and a 60."

In this 1996 Guitar Player interview, Robin Guthrie says: "For clean sounds I use a Rockman Sustainer [sic]."

In this 1996 Guitar Player Magazine interview, Robin Guthrie says: "for the more distorted sounds I use a Marshall JMP-1 preamp."

Robin Guthrie mentions using the HH Electronics IC100 Amplifier in the equipment notes section on his official website.

Garlands: "this went into my amp, a Maine combo (60w 2x10 never seen one since)".

Note: there is no 60w 2x10 Maine combo, only a 50w 2x8 one (Club) and an 80w 2x10 (Stage): http://schems.com/bmampscom/maine/Maine_50C_&_80S_Combo_Power_Amp.zip

In this live video of Pearly Dewdrops' Drops (https://www.youtube.com/watch?v=u0upaIZF_gA), Robin can be seen using a Roland Bolt 30 amp.

This website has transcriptions of various posts by Guthrie submitted to Cocteau Twins forums in the early 00's. In the "Looping" section, he explains, “…that seems to change everytime I play as I haven’t really found the ideal [looper] unit—I use a Jam-Man, an Electrix repeater or a Boomerang depending what works. [reverb] Eventide, [delay] Echo-Pro, and [piano] Steinberg Grand [while recording Imperial]…..[and for Violet Indiana performances] Flextone II amp."