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Since 1983, the stationary transistor radio "Estonia-010-stereo" was produced by the Tallinn plant "Punane-RET". The "Estonia-010-stereo" high-end stereo block radio is intended for receiving broadcasts of broadcasting stations in the CB and VHF bands, as well as for high-quality playback of mechanical recordings from records. Radiol consists of five blocks: a tuner, a preamplifier, a woofer, an EDA unit, and two active speakers of the "25AC-311" type, and later "35AC-213". The tuner has LED indicators for fine tuning, stereo presence, mono-stereo mode, multipath reception and signal level. There is a voltage calibrator, which provides a more precise setting of the recording level on a tape recorder, electronic frequency tuning, a digital scale, and a silent tuning system. There is an automatic shutdown of the AFC when the setting knob is touched and the mode (far stereo), reducing high-frequency noise when receiving stereo broadcasts of remote radio stations. In the pre-amplifier there is a smooth and separate adjustment of timbres in the HF and LF, the limitation of the AF range from below, fixing the frequency response, indication of the output signal level and overload. In addition to the inputs and outputs intended for docking with the remaining blocks, the preamplifier has inputs and outputs for two tape recorders, with the possibility of rewriting the phonograms, a universal input, an output for connecting stereo phones. The electric player is equipped with a microlift, self-locking device and a stroboscope of the disk rotation frequency. There is a software management tone. In the EP applied direct drive low-speed electric motor. The active AS "25AS-311" consists of a PA with passive separation filters at the outlet, three heads: 25ГД-26, 15ГД-11, ЗГД-31 and a power source. There is an electronic protection against short circuit in the load. The main technical characteristics of the blocks: Tuner. Real sensitivity with outdoor antenna in the range of CB 150 µV, VHF 10 µV. Nominal frequency range of the path: AM 150 ... 3550 Hz, FM 5 ...15000 Hz. Transient attenuation between channels 36 dB. The harmonic coefficient in the path AM 5%, World Cup 0.8%. Dimensions 460x80x360 mm. Weight 10 kg. Pre amp. The nominal frequency range is 20 ... 20000 Hz. The tone control range (at frequencies of 40 and 16000 Hz) is ± 12 dB. Crosstalk between channels at 1 kHz 48 dB. The harmonic coefficient of 0.03%. The signal-to-weighted noise ratio is 71 dB. Dimensions 460x80x360 mm. Weight 10 kg. Electric player. The nominal frequency range is 20 ... 20000 Hz. Knock factor 0.08%. The relative level of roar -74 dB. Dimensions - 480x108x384 mm. Weight - 12 kg. Loudspeaker "25AS-311". Rated power 25 watts. The input voltage is 1 V. The frequency range of the sound pressure is 40 ... 18000 Hz. Nominal average sound pressure 1.2 Pa. Dimensions - 320x540x320 mm. Weight 20 kg.