Yamaha DX9 Digital Programmable Algorithm Synthesizer

This is a Yamaha DX9 Digital Programmable Algorithm Synthesizer. It features a 61-key keyboard and a digital display. The synthesizer has various controls for sound manipulation, including sliders and buttons for different functions and memory selection. The back panel indicates it is a Yamaha DX9, model number 9734, made in Japan, with power specifications of 35W, 50/60Hz.