Amplifiers
Nonlinearity of the frequency response in the range of reproducible frequencies of 40—16000 Hz - 1.5 dB at the linear input (2 dB with the presence of a corrector);
Nonlinear distortion coefficient in the range of reproducible frequencies of 40–12,500 Hz, no more than 1%.
The coefficient of intermodulation distortion in the reproduced frequency band of 250–8000 Hz (also outside this band while reducing the sound pressure level by 6 dB), no more than 3%;
The variation of the parameters of channels in the range of reproducible frequencies, no more than - 3 dB;
Tuners
Band of reproducible frequencies, 30 Hz - 15 000 Hz (it is difficult to get higher boundaries, due to the need to suppress the 19 kHz pilot tone)
Nonlinear distortion factor at a frequency of 1 kHz, no more than - 0.5%;
Difference of parameters of channels in the band of 250–6300 Hz, no more than –3 dB;
Transient interference at frequencies of 250–6300 Hz (6300–15000 Hz), no more than 26 dB (15 dB).
In the future, DIN45500 in almost unchanged form became the EU standard IEC 60581, and in the USSR similar GOST 24388-88 (for UMZCH) and GOST 23262-88 (for AC) were adopted.