Hardware⏱️ 3 min read📅 2026-05-26

How to Fix: Ground loop issues on MacBook Air


Ground loop issues on MacBook Air can occur due to the use of multiple power sources and devices connected via USB-C, which can create a ground loop. This happens when there is a difference in voltage levels between the devices, causing electrical noise and interference.

⚠️ Common Causes

  • Using multiple power sources, such as the MacBook Air's MagSafe and the Ugreen Uno 6 in 1 USB-C Hub.
  • Connecting devices via USB-C without using a powered hub or isolator.
  • Using unbalanced audio interfaces like the Scarlett Solo.

🛠️ Step-by-Step Verified Fixes

Method 1: Using a Powered Hub or Isolator

  1. Step 1: Connect the Ugreen Uno 6 in 1 USB-C Hub to a powered source, such as a wall adapter.
  2. Step 2: Ensure that all devices are connected to the hub using USB-C cables and not HDMI or other types of connectors.
  3. Step 3: Test your setup by playing audio through the speakers and microphone to ensure there is no noise or interference.

Method 2: Using an Unbalanced Audio Interface with a Balanced Output

  1. Step 1: Connect the Scarlett Solo to a powered source, such as a wall adapter.
  2. Step 2: Use an XLR-to-balanced-triangle cable to connect the Boya Mic to the Scarlett Solo's balanced output.

Method 3: Using a Balanced Audio Interface

  1. Step 1: Connect the Ugreen Uno 6 in 1 USB-C Hub to a powered source, such as a wall adapter.
  2. Step 2: Use an XLR-to-balanced-triangle cable to connect the Boya Mic to a balanced audio interface, such as the Focusrite Scarlett 2i2 or PreSonus AudioBox iTwo.

💡 Conclusion

By following these steps, you can resolve ground loop issues on your MacBook Air and ensure a stable and interference-free audio setup.

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