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Amplifier of power "Radio engineering UM-7011-stereo" and a preliminary amplifier "Radio engineering UP-7010-stereo" at the beginning of 1987 prepared for release the Riga radio factory named after A.Popov. The power amplifier is designed to work together with a preliminary amplifier as part of a top-class block complex of the type "KU-001-01", which also included two "S-90V" speaker systems. All three components are well coordinated with each other and, according to their technical characteristics, provide the level of professional purpose and for 1987 had no analogues in the country. Technical parameters UE: Frequency range of 1.6 ... 250 000 Hz. The harmonic coefficient is less than 0.002%. Dimensions 430x330x60 mm. Weight 4.6 kg. Technical parameters of the PA: The range of reproduced sound frequencies is 5 ... 160,000 Hz. Rated output power 2x125 watts. Maximum peak 300 watts. The coefficient of nonlinear distortion of 0.001%. Background level -122 dB. Power consumption without a 50 W signal, at rated output power up to 800 W, at maximum output power up to 1600 W. The dimensions of the MIND - 430h92h368 mm. Weight of UM 11 kg.