This is a demo video of the Diabolical Devices Modified TR-505, a circuit bent version of the classic Roland TR-505 drum machine.

via bigcitymusic:

The Diabolical TR-505 is similar to the 707 and 727.

It has four knobs to manipulate the pitch of kick, snare, toms, timbales and congas. It also has a ten point patch bay for linking various bends. The cymbal sounds are crazy!