Update via anonymous in the comments: "There's more details on www.tonyblack.org on the "Machinery page". Scroll down and click on the "Formant" link for more photos. The orange synth is made from Formant modules, and the synth with the black panels is a mix of Formant and DIY Arp modules."
Title link takes you to the Google translated page (French to English) of the Microcosm Aleatory Synthesizer. You will find some samples there. The site encourages you to downlad the samples for your own compositions which you can then send back to them to be posted. Via Chroniques de la Mao.