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The complete audio amplifier "UK-042-stereo Electronics" and "UK-043-Stereo Electronics" were produced from the first quarter of 1984 by the Vinnytsia factory "Oreol". Amplifier "Electronics UK-042-stereo" is designed to enhance the music and speech programs when working with tape recorders, tuners, electric playing devices and other household equipment. The amplifier has a quasitouch switch of inputs with LED indication of a connected input and output jacks for connecting signals from an external amplifier, from a pre-amplifier and from an equalizer. Provides electronic amplifier overload protection, speaker protection against DC voltage at the output of the amplifier. Specifications: Frequency range 20 ... 22000 Hz. Nonlinear distortion 0.3%. The signal-to-noise ratio with an output power of 20 W - 75 dB. Transient attenuation between channels of at least 45 dB. Rated output power at a load of 8 ohms - 2x20 watts. Power consumption 75 watts. Dimensions of the amplifier 320x60x320 mm. Weight 6 kg. Retail price of 215 rubles. At the end of 1984, the plant produced a modernized Hi-Fi amplifier UK-043-stereo amplifier in which LED overload indicators were used and the frequency range was increased to 25,000 Hz. In all other respects, except for a slightly improved and more stringent appearance, both amplifiers are similar.