[Baten]

When setting up my amp/dac in a new room there is a LOUD noise in the final output.
 
I broke it down to the outlet itself, when my laptop power is connected somewhere, the noise occurs.
But I kind of need power in my laptop when listening to music. How could I solve this problem?
 
Can I perhaps isolate the laptop power in another extension cord? Or that might change nothing.
Since it's the grounding, do I need some kind of 'clean' power (generator?) device?
 
Please help! Thanks so much

 

[Thenewguy007]

If there is noise when you connect your laptop, it might be DC offset.
This would fix it
https://emotiva.com/products/accessories/cmx-2
 
If it is just a ground loop, buy a cheap 99 cent 3 prong to 2 prong adapter & plug it to your power cord

You'll know immediately if it was a ground loop or not.
 
 
EDIT
 
I see you are in Belguim
The Emotvia might not work with 240v.
There is this from kempelektroniks.nl
'POWER DC X-TERMINATOR - DC offset hum transformer noise eliminator
They also sell a cheaper version called the 'DC OFFSET KILLER'.
 
 
 

 

[Baten]

Hey, thanks for the links. Interesting products,
 
I'm going to ask a tech friend to take a look. Definitely a ground loop, if we can find a way to get rid of it that'd be great

 

[Thenewguy007]

If you find a device to fix the ground loop, post back, I'd like to know how it was fixed!