Hi:
My recently sold NAD 3020 use to "thump" when turned on and right after that one channel sounded like big sunami waves. Those noises usually disappeared in a couple of minutes.
The solutions were: Push mute button before powering on and let pass two or three minutes to get things warmed-up.
After that it should sound nice.
Good luck
My recently sold NAD 3020 use to "thump" when turned on and right after that one channel sounded like big sunami waves. Those noises usually disappeared in a couple of minutes.
The solutions were: Push mute button before powering on and let pass two or three minutes to get things warmed-up.
After that it should sound nice.
Good luck