Radioconstructor `` Electronics '' (Equalizer).

Radio and electrical constructors, sets.Audio AmplifiersThe radio designer "Electronics" (Equalizer), presumably since 1977, has been producing an experimental plant at the Novosibirsk Research Institute "Vostok". RK is intended for assembling a multi-band tone control - equalizer. Number of control bands 6. Frequencies of control bands: in the low frequency range 60, 125 and 250 Hz. In the HF region 2.5, 8, 16 kHz. Output voltage regulation limits ± 10 dB. The transmission coefficient at the middle position of the sliders is 0 dB. Power supply voltage ± 15 V from the built-in power supply, which is powered from the mains