[Music Alchemist]

I got JBL LSR305 speakers today. They sound amazing...but there's horrendous computer noise that's often as loud as the music.
 
I know it's related to computer power because when I unplug my laptop's power cable, the noise disappears...but I obviously can't leave it on battery power for long.
 
I have the power cables for both the computer and speakers connected to a surge protector. My DAC/preamp is a USB-powered Schiit Fulla 2.
 
What should I buy/do to remove the noise?
 
Would connecting the computer to a different surge protector change anything?
 
Or would I need to buy a device to eliminate ground loops and the like?

 

[kimvictor]

There are filters made for noisy USB jacks. Here are few companies that makes them: Audioquest, Schiit, and ifi audio.

 

[ProtegeManiac]

  I got JBL LSR305 speakers today. They sound amazing...but there's horrendous computer noise that's often as loud as the music.
 
I know it's related to computer power because when I unplug my laptop's power cable, the noise disappears...but I obviously can't leave it on battery power for long.
 
I have the power cables for both the computer and speakers connected to a surge protector. My DAC/preamp is a USB-powered Schiit Fulla 2.
 
What should I buy/do to remove the noise?
 
Would connecting the computer to a different surge protector change anything?
 
Or would I need to buy a device to eliminate ground loops and the like?

 
Schiit Decrapifier but check as it might not be available right now. it's not a priority for their production line I think.
 
Or get the Modi2 Uber and either the Vali2 or Magni2 Uber so you still get preamp output but the Modi2 Uber uses its own power brick. If that still gets noise, try the Decrapifier or Jitterbug.

 

[Dulalala]

 
Or get the Modi2 Uber and either the Vali2 or Magni2 Uber so you still get preamp output but the Modi2 Uber uses its own power brick. 

I believe the Fulla 2 has the ability to draw power from a separate source instead of through USB through its second micro USB port.

 

[Music Alchemist]

Hi, guys. This thread took awhile to be approved. I had already fixed the noise by the time it was up.
 
All I needed to do was put a cheater plug on the laptop charger.

 
I used to own a Magni 2 Uber and Modi 2. The Modi 2 Uber is still USB-powered when connected via USB. I also used to own a Wyrd, but didn't want to get another just for this.

 

[ProtegeManiac]

  I believe the Fulla 2 has the ability to draw power from a separate source instead of through USB through its second micro USB port.

 
Oh yeah, you can use a powerbank with it.