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Buzz from mouse in speaker

Hi!

I just registered here, because i am at my wits end, and hope someone has some insight. I have a buzzing sound in my speakers, which gets stronger when i move the mouse. 

My setup: 

Desktop computer - Mtrack Duo - Marantz 1530 stereo amplifier

The sound is a kind of high pitched buzzing static, which corresponds to activity on the computer, most notable mouse movement. I can also hear it at a low volume from the mobo itself, if i put my head in the computer with the speakers disconected.

It´s also transfered if i connect from the onboard motherboard audio card straight to the amp. I can however not hear it in a pair of headphones. Plugin into an active stage speaker greatly reduces the issue, to almost inaudible. 

Connecting another computer to the amp is trouble free. 

My best guess is that the source of the problem is coil whine from the motherboard. i have tried replacing the PSU to no effect. 

However i find it strange that the issue disapears when i connect to an active stage speaker. 

Does anyone have a sugestion for further troubleshooting or a solution?

Thanks in advance!

dundeyr
nosualc
99 posts
 

I don't think it's your mouse. I connected my mouse to the usb port on my streamer and heard no difference. 😉

yage
400 posts
 

Try using a USB isolator (like a Topping HS01) between your computer and the M-Track Duo.

ddd1
261 posts
 

You might be expecting too much from an audio interface that costs the same as a takeout dinner for two made with parts that costs the manufacturer the price of a jumbo fries. Try substituting with something better and send it back if it doesn’t help. Trying an audiophile DAC meant for playback (instead of an inexpensive audio interface from a music store) in your system, for example, costs nothing if you only use it to troubleshoot the problem. Or borrow one from a friend.

If it doesn’t fix the problem you can delve deeper into computer optimization (switching USB ports, disabling onboard audio on MB, changing mice (try wired, not wireless if you haven’t yet, USB isolator as mentioned above etc. etc) which is beyond the short answers that you will see here.

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