Hiss (noise) from speakers at addition in system LAMM L2.
Three weeks ago, I have bought preliminary amplifier L2 reference Improvement in sounding all system was huge!!!! The overall dynamics and scale of the music!!! Illusion of a presence(finding) in a concert hall has appeared.
But I am disturbed with the following: At addition in system L2 strong enough noise (hiss) has appeared from speakers. At inclusion of toggle-switch MUTE hissing disappears, at deenergizing Toggle-switch MUTE all room is filled with noise (hiss). Even at listening music on silent passes or piano music Such noise level it is normal or L2 demands repair?
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