Review on 🔇 Eliminate Ground Loop Noise with JABINCO Ground Loop Isolator for Car Audio/Home Stereo System – Includes 3.5mm Audio Cable (Black) by Clete Dean

Definitely helps with bad motherboard sound. You haven't completely removed the unwanted noise. I would say it was around 80%. Honestly, this is the best I could have hoped for. I had a real mobo dog. I didn't notice any degradation or difference in sound quality, but didn't really test for it. I don't need them anymore but I still use them for sex reassignment. So they will always have this value.