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

Roland Jupiter 4 
Roland Jupiter 6 
Roland Jupiter 8 
Roland JP-8000 
PPG Wave 2.3
Roland Juno 106 
Roland D50 
Mini Moog
Moog Source 
Yamaha DX7
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

Fender Stratocaster (New ones, Old ones, Custom Shop, and self-built/modified ones)
Fender Telecaster
Gibson Les Paul
Gibson Flying V
Gibson Explorer-Pro
Gibson Thunderbird Bass
Epiphone Les Paul
Epiphone Thunderbird Bass

Computers, Sequencers and peripherals:
Atari & Notator SL
PC’s running Win95/98/XP/Windows7
Cakewalk, Emagic Logic Audio, Cubase, Studio One
RME audio interfaces
Genelec speakers

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

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

Tons of SONOR and SIGNIA Sets
Roland PDX Drumpads
Alesis D4
Alesis DM10