Harrison Instruments model 204 Theremin


Harrison Instruments

The Harrison Instruments Model 204 Theremin is a complete tabletop pitch instrument with a built-in loudspeaker. It is powered by an internal 9-volt battery, and has an output jack for connection to an external amplifier or effects processor. When used as a stand-alone theremin, the 204 provides a fixed volume suitable for small-group demonstrations, and serves equally well in business and retail venues. The 204's highly stable, low-noise output is well-suited for practice, performance and recording.


  • High-fidelity, pleasing output tone with exceptionally low noise, wide pitch range, and good linearity (click for 300kByte .wav sound sample)
  • Output Jack for connection to external amplifier or effects processor
  • Loudspeaker disconnects when cord is inserted
  • Precision, ten-turn Zero Control for easy sensing adjustment
  • Sufficient sensing range to operate without a ground connection; increased sensing range with ground
  • Attractive clear-anodized brushed aluminum and 9-ply wood cabinet for tabletop use
  • Rubber feet prevents marring delicate surfaces
  • Detachable, plug-in plate antenna
  • Internal 9v battery provides hours of play time
  • Rear battery access through screw-on panel

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