Our Analog Theremin is more than just a theremin. Apart from beeing able to create the traditional sweet, violin-like sound over a wide frequency range ( 10 Hz - 5 Khz ), we have included some clever tone and wave-form modifying features. Knobs from left to right are volume, frequency selector and tone. Operating range ca 30 cm, tuning via telescopic antenna (detachable). Wide frequency range. SIZE: (200mm x 150mm x 35mm). WEIGHT: 2 Kg.