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The electronic set "Electronics-20" (Stereoamplifier) "‹"‹was produced from I quarter of 1985 by the Vinnitsa plant "Oreol". Radio set "Start" The Stereoamplifier "Electronics-20" is intended for radio amateurs who are interested in building high-quality household radio equipment. The set contains a case, nodes and elements from which you can assemble a high-quality stereo sound amplifier in two versions. Specifications: Rated output power at a load of 8 ohms - 20 W (option 1) and 10 W at a load of 4 ohms (option 2). The operating frequency range is 20 ... 30000 Hz. The harmonic coefficient of 0.15%. Power consumption up to 75 watts. The amplifier has protection against a constant voltage at the output for acoustic systems and against transients when switching on and off. Adjustment of bass and treble tone, output voltage level and overload indicators are provided. Read more in the instructions.