http://www.hificritic.com/downloads/...C_Krel300i.pdf
σελ. 39, 2η στήλη, 2η παράγραφος:
"
Some critics have commented on a slight background hiss from this amplifier. I found that it was at a low level, and did not vary much with the volume setting, and was not significantly audible with my 87dB/W Eidolon Diamond speakers at my normal 3.5m listening distance. However, some might hear it faintly if closer in, and also with higher sensitivity speakers, say 90dB/W or more. I would leave out sensitive horn designs for this reason but check this out with your dealer."
Το hum, o θόρυβος από την τροφοδοσία, είναι χαμηλής συχνότητας: 50 ή 100 Hz και οι πρώτες αρμονικές τους. Αυτό που περιγράφεις είναι hiss (φύσημα) και είναι υψίσυχνο.