Casio electronic synthesizer with amp and speaker.

Casio CTK-471 Digital Synthesizer. This Synthesizer has many preset instruments. The instrument that is closest approximation to a sine wave is the 'Whistle'. OPTIONAL: An oscilloscope to project video images of the synthesizer waveforms.
UCB Index: 
B+45+55
PIRA Index: 
3C50.12
Demo Diagram: 

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