FIELD: radio engineering. SUBSTANCE: device has signal source, device for regulation of amplitude-frequency response, low frequency amplifier, speaker, controlled attenuator, testing unit. In addition device has unit for automatic regulation of amplitude-frequency response. It is connected through communication wire to testing unit which is positioned in point of listener. In addition switch is provided for disconnection of amplitude-frequency response regulation unit from signal source and from low frequency amplifier and for connection to them unit for automatic regulation of amplitude-frequency response. EFFECT: increased functional capabilities. 2 cl, 2 dwg
