Possible ground loop issue when using an audio interface with a laptop connected to its charger

[Mugetsu]

@AnalogSteph Hello, just to give an update, bought the DSD TECH SH-G01L (read good reviews about it in this forum) and it worked. For high gain amps it fixes the problem for like 60 to 80 % and for clean ones for like 80 to100 % so overall I'm satisfied with the result. It cost me $40 USD but at least I learn some things with all the problems that arised.

I also like that it can provide up to 400 mA of power so it has no problem in powering the audio interface since it consumes something like 230 mA (measured it with an USB multimeter) in use, so no external power supply needed making its use a lot more confortable.

My guitar has passive humbuckers so at least there is that. Also just bought a new guitar with active pickups (humbuckers too) so supposedly they are more silent than passsive ones. When it arrives I'll test to see if that makes a difference.

Cheers.

 

[ExT]

@AnalogSteph Hello, just to give an update, bought the DSD TECH SH-G01L (read good reviews about it in this forum) and it worked. For high gain amps it fixes the problem for like 60 to 80 % and for clean ones for like 80 to100 % so overall I'm satisfied with the result. It cost me $40 USD but at least I learn some things with all the problems that arised.

I also like that it can provide up to 400 mA of power so it has no problem in powering the audio interface since it consumes something like 230 mA (measured it with an USB multimeter) in use, so no external power supply needed making its use a lot more confortable.

My guitar has passive humbuckers so at least there is that. Also just bought a new guitar with active pickups (humbuckers too) so supposedly they are more silent than passsive ones. When it arrives I'll test to see if that makes a difference.

Cheers.

That one will for sure fix your ground noise. I had the same issue with my last Topping DAC and it definitely fixed it. Great thing about this particular product is that it’s quite cool when running compared to other isolators.