This page is dedicated to the Yamaha CS-30, the monophonic top-of-the-line of Yamahas CS-series synthesizers. This synthesizer series comprised of the CS-5, CS-10, CS-15 and the CS-30. These were all monophonic. The polyphonic series comprised of the CS-50, CS-60 and the classic CS-80, Later came the CS-30M and CS-40 monophonics as well as the CS-70 polyphonic with some patch saving capabilities and different design. All the units of this series of vintage synthesizers are very nice and collectable, but the CS-30 was the largest and most flexible of the monophonic series. If Yamaha had ever decided to build a large modular system they could have done so using some of the designs of the CS-series. In this page I will go through the features of the CS-30, for anyone interested.