Adorable Nina sits atop a Yamaha CS1x synthesizer. From ros_franck via Instagram.

The CS1x was a popular synthesizer in the 1990s. Although it carries the “CS” prefix, it’s not really related to the legendary CS line of the 1970s, but a sample-based instrument of its own design. The newer Yamaha Reface CS is a closer emulation of the original CS line.