This standard applies to devices for reproducing mechanical sound recordings, including those included in combined mouths
GOST 11157-1987 Referenced Document
GOST 11948-1978 Devices for measurement of wow, flatter, parasitic amplitude modulation and drift factors for sound recording and reproduction apparatus. Technical requirements and test methods
GOST 7399-1980 Connecting cords for domestic electrical appliances. Specifications
GOST 7518-1983 Transformers for domestic apparatus. Specifications*, 2024-04-19 Update
GOST 8711-1978 Ammeters and voltmeters. General technical specifications
GOST 11157-1987 history
1987GOST 11157-1987 Reproducing devices of mechanical sound recording. General specifications