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The color organ prefix "Sigma" was produced since the beginning of 1991 by the Obninsk instrument factory "Signal". TsMP "Sigma" is intended for color accompaniment of musical programs. The main channels - 3 (LF, MF and HF). The boundaries of the working frequencies - 50 ... 15000 Hz. Maximum power consumption 160 watts. Dimensions of CMP - 380x160x170 mm. Weight 3.5 kg. Read more in the instructions.