It looks like a Phaser, but it is a Phasor - and a fully programmable Synthesizer. It offers 6 parameters - each with a value of 0-255. The manual don't tell you what these parameters exactly are, but you can make damn digital noises and sounds and play them on the keyboard which has 10 notes. In a way this is between CASIO VL-1 ADSR function and REMCO Sound FX Machine. A true Masterpiece of early Sound Toys.