The following equipment was used since 1980:
(actually there was much more equipment involved, but this list represents our favourite toys)

Synthesizers:
Roland Jupiter 4
Roland Jupiter 6
Roland Jupiter 8
Roland JP-8000
PPG Wave 2.3 (midified, and still over the top)
Roland Juno 106
Roland D50
Mini Moog (also known as the Moog "simplifier")
Moog Source
Yamaha DX7 (at least one or two sounds were quite good)
Sequential Circuits Prophet 5
Sequential Circuits Prophet VS
Roland Vocoder
Korg Wavestation EX
Korg Wavestation AD
Emu Orbit
Emu EMAX Sampler
Emu E4/E64 Samplers

Computers, Sequencers and peripherals:
Atari & Notator SL
PC/Win95/98/XP & Cakewalk, Emagic Logic Audio, Cubase SX
RME audio interfaces
Genelec speakers

Recording:
Studer A80/24Track
Otari MTR90/24Track
Fairlight MFX3+

Drummachines:
Roland TR808
Roland CR78
LINN Drum
Oberheim DMX
Emu Drumulator
Emu SP12
Emu SP1200
Yamaha RY30
Simmons SDS5
Alesis D4

Drums:
Tons of SONOR and SIGNIA Sets