Ground‑loop hum is the silent killer that can ruin an otherwise flawless stream. It usually crops up when you connect a mic preamp, an audio interface, and a power strip all on different outlets. The fix? Break the loop with a single, properly grounded isolation transformer or a **DI box** that has a *true* ground lift. Plug the mic into the DI, feed the DI’s line out to your interface, and you’ve isolated the audio signal from the problematic ground path—instant silence.

Pro tip: If you’re in a tight spot, swap the power outlet of just the audio interface to the same rack as the mic pre. Ground loops almost always stem from separate ground references; aligning them removes the differential that feeds the hum. Keep the chain as short as possible, and use shielded cables—cheap cable is the most common culprit for the 60 Hz hiss.

**Resource**

[YouTube: “How to Eliminate Ground Loop Hum in Home Studio”](https://www.youtube.com/results?search_query=ground+loop+hum+audio+eliminate)