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Help! Is my new McIntosh MA12000 broken?

Hi, can you please help me?

I bought my first McIntosh amp, MA12000 and it is making a pretty loud hum.

It does not come from the loudspeakers.

The hum comes from the amp itself. 

With or without any sources connected to the amp make no difference to the hum.

I`m a bit surprised that such an expensive amp is so noisy. 

Do you think there is something wrong with the amp or is it supposed to make that humming noise?

Any and all answers are very much appreciated.

hifilover87
dill
2,525 posts
 

No, it should not make a loud humming noise. Contact your dealer and have them take care of the problem for you.

vonhelmholtz
911 posts
 

Mine is 100% quiet.

I did not have a good experience with Macintosh service when the DAC went out. The factory response was really pitiful. I finally had the DAC module replaced by my dealer.

zlone
657 posts
 

Not an expert on this, but if the sound is coming from the amp itself I think it means you have some DC on your AC power line and it is making your transformers hum. Look into a DC blocker, I think there are several options out there. ( e.g. HumDinger)

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