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The Proton-310-stereo stereo cassette recorder-set-top box has been produced in 1983 from the Proton Kharkov Radio Plant in small series.
The 3rd class stationary set-top box 'Proton-310-stereo' is intended for recording phonograms from various sources of low-frequency signals and their reproduction.
Why is MP stationary?
Because it does not have a battery compartment, it is powered from the mains and is intended for the subsequent amplification of recorded phonograms through CCU with speakers.
MP has: pointer indicator of recording level and supply voltage;
tape type switch Fe and Cr;
hitch-hiking;
ARUZ system;
smooth adjustment of volume and treble.
Key parameters: tape speed 4.76 cm / s;
detonation coefficient 0.3%;
working frequency range at the linear output 40 ... 12500 Hz, from the loudspeaker 150 ... 8000 Hz;
rated output power 1.2 W, maximum 2 W;
level of interference in the recording and playback channel -50 dB;
MG dimensions - 260x205x73 mm;
weight 3 kg.