All transformers will hum a little but only poorly constructed ones will generate excessive hums. I would consider that a defect if you can hear it more than a few inches away, especially in a modern high-end amp. The propose of a high-end amp is play music in a quiet room. It shouldn't hum at all.
Amplifier hum - normal?
Is it normal for amps to emit a slight humming noise from the transformer when turned on?
I never noticed it in my old integrated that I lived with for over 10 years, but that was lower power. Now I've gone from 50wpc to 120wpc... don't know if that makes a difference here though.
I mean, it's not nearly enough to bother me or even really be audible past 3 feet away... but I am curious if this is typical for amplifiers to do this.
I never noticed it in my old integrated that I lived with for over 10 years, but that was lower power. Now I've gone from 50wpc to 120wpc... don't know if that makes a difference here though.
I mean, it's not nearly enough to bother me or even really be audible past 3 feet away... but I am curious if this is typical for amplifiers to do this.