Hi
I purchased this Hypex NCore power amp HPA-S500NC 2x500W @4ohm from Audiophonics in 2022.
This amplifier has developed a hiss and crackling noise which I think is not normal. When I bring my ear a few centimeters from the tweeters of my speakers, I can hear this noise. But when I connect my same speakers with the same cables to my Emotiva BASX A300 power amplifier, the noise is much lower. Of course, there's a faint hiss but not as bad as this Audiophonics amp. This surprises me because it is based on a hypex module which should have a noise floor way lower than the Emotiva amp. It should be virtually quiet. I have recorded this noise and I try to attach it here as a zip file. Thanks for any help and support.
Cheers
Paul
