In the 1970s, European rock rippled with the sounds of the VCS3. The first portable and semi-integrated synthesizer, it predated the more commercially successful and well-known Minimoog by a year. Instead of using the physical cables employed by most other manufacturers, the VCS3 uses a unique circular patching matrix with corresponding resistor pins. Led Zeppelin, The Who and Pink Floyd are among a long list of progressive artists who put it to work.