From a Ralf Hutter interview, bits from Wiki, and The Kraftwerk website :
Kraftwerk had a policy of not selling or throwing away old gear and had various home-made drum-machines, sequencers and synths. Some of these projects were commissioned by the band and made for them by other electronic designers. Some of the Equipment used in the late 1970's included:
- 2 "Synthanorma" 16-step custom-built analogue sequencers built by Matten & Wiechers
- Prophet 5
- Moog Micromoog
- Moog Minimoog
- ARP (white-faced) Odyssey
- EMS Synthi-100 Modular Synthesizer System. (EDIT : Right Hand Photo Below)
- EMS Synthi-A Synth
- Farfisa Professional Piano
- An Orchestron for choir sounds
- customized Farfisa Rhythm Unit 10
- Custom-built electronic drum pads
- Vox Percussion King
- Eventide Digital Delay.
- Eventide FL-201 Instant Flanger
- Roland RE-201 Space Echo
- A military speech synthesizer, based on creating phonemes.
- Schulte Compact Phasing A
- Mutron Biphase
- EMS 2000/3000/5000 series Vocoder (EDIT : Right Hand Photo Below)
- Synton 221 Vocoder (unconfirmed)
The album was composed/recorded in the old Kling-Klang Studios in Dusseldorf. From some time after 1974 the studio was meant to have a console and a 24 track tape machine, courtesy of an advance from Phonogram, and possibly the recommendation of Conny Plank. I'm not sure about this. Kling-Klang was a large room of about 600 sq ft.
So, it's possible the album was recorded on 2" tape. Any of the compositions may have lived on 2" reels and been worked on by the band from the mid 70's through to the time of mixing. This might explain their increased album output during this period, as they were notoriously fickle about approving releases.
The mixes were apparently too complex for the band to perform. This may explain why the band hired sound engineer Leanard Jackson from Detroit to work together with Joschko Rudas on the final mix of the record. This was done at Studio Rudas in DΓΌsseldorf, so additional outboard processing may have been used. Man Machine was Released in May 1978.
Cheers RAy