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Radio constructor-3 (dual-channel power amplifier) "‹"‹has been produced since 1989. RC is designed to build a two-channel power amplifier. The use of integrated circuits in the power amplifier of this category of complexity makes it possible to significantly reduce the number of components and design dimensions. Technical characteristics of the assembled amplifier: The range of reproducible frequencies with a blockage at the edges of 2 dB - 20 ... 20000 Hz. Rated output power at a load of 4 ohms and a harmonic coefficient of 1.5% - 2x10 watts. Maximum output power 2x16 watts. S / N ratio is not worse than -66 dB. Transient attenuation between channels at a frequency of 1000 Hz -50 dB. The nominal sensitivity of the amplifier with an input impedance of 100 kΩ is about 100 mV. The cost of a set of 32 rubles.