Ok, let's kick things off with TD live at the Royal Albert Hall in 1975, basic list perhaps somebody else can add something?:
Edgar Froese:
Mark V Mellotron
M400 Mellotron
Farfisa Piano
Farfisa Organ (400, double keyboard)
EMS Synthi VCS3 synthesiser (with keyboard and Sequencer)
ITA Mixer (10 into 4 channels)
2 X 200W Marantz Amps
4 X Expo speakers
Phaser
Revox Echo machine (with Dolby)
Chris Franke:
2 X Moog 3P modular system (plus 960 sequencers)
Minimoog
EMS Synthi A synthesiser
EMS QUEG Quadrophonic Effect generator:
http://www.ems-synthi.demon.co.uk/queg.gif
Elka Rhapsody 610 String Synthesiser
Farfisa Organ
Revox A77 echo machine
Computer controlled Rhythm programmer (Eko Computer-rhythm?)
TFE mixer (16 into 4 channels)
4 X K+H 200W slave Amps
4 X Altec Lansing A7-500 speakers
Michael Hoenig:
Yamaha YC45D organ
2 X Custom modified Minimoogs with additional control inputs
960 Moog sequential controller
Custom Modified EMS Synthi A (with keyboard)
Modified ITA mixer (10 into 4 channels)
Modified Revox A77 echo unit, with variable speed control (and Dolby)
Compact Phasing A (Phaser pedal)
Various foot pedals