The printed PCB says that this is named "Percussive Synthesizer Model
MPC rev1" and it is a "Synare Sensor" clone. I got the DIY Kit and the
knobs from ebay and the weird metal box from a fleamarket (the
cheapest part, only 0,50€

about 3-4 hours on building it!
The project was great fun and is very suitable for DIY beginners like me.
Nice & easy project to build for any dubhead i think.. it can make all kind
of cool sounds, from electronic percussion to piouw piouw,to wouOw, to
spacegun / lasersounds, or even some kind of siren.. I will post some
music with this box soon, maybe if i get my hands on a camera also some
video!
Thanks to the man called SubTiel for letting me know where to get the
knobs!
One
Yiannis