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The equalizer "Electronics E-003-stereo" was produced from I quarter of 1985. A graphic equalizer with a sound pressure indicator allows to correct the non-linearity of the amplitude-frequency characteristic of the electro-acoustic path of the radio reproducing radio equipment. Specifications: Frequency range 20 ... 35000 Hz. The total coefficient of nonlinear distortion at frequencies of 40 ... 16000 Hz is less than 0.02%. Signal to noise ratio of at least 100 dB. The number of adjustable bands for each channel is 10. The range of correction of sound pressure in 10 octave bands is 0.02 ... 0.5 Pa. Overall dimensions of the equalizer 440x380x110 mm. Weight 9 kg.