Short answer: there are two different 3.5mm standards.  Please make sure your mic uses the Apple/CTIA connector standard (compatible with Apple devices).

Adapters are available that can convert AHJ/CTIA standard connectors to Apple standard, allowing broader compatibility and are often inexpensive.


Example of a compatible mic would be on these Apple headphones. 


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Long answer:

Understanding TRRS Standards: Apple vs AHJ/CTIA

When connecting external microphones to devices like the Jamstack 2, it's crucial to understand the difference between two main TRRS (Tip-Ring-Ring-Sleeve) standards: the Apple standard and the AHJ/CTIA standard.

What is TRRS?

TRRS connectors are used in most modern smartphones, tablets, and some laptops. They allow for the connection of external devices like headphones and microphones. A TRRS connector has four segments:

  1. Tip (T)
  2. Ring (R)
  3. Ring (R)
  4. Sleeve (S)

These segments are responsible for carrying audio and microphone signals.

The Apple TRRS Standard

  • Configuration: Left audio, right audio, ground, microphone.
  • Compatibility: Specifically designed for Apple devices like iPhones, iPads, and some MacBooks.
  • Key Feature: The microphone segment is located on the sleeve end of the connector.

The AHJ/CTIA Standard

  • Configuration: Left audio, right audio, microphone, ground.
  • Compatibility: Commonly used in Android devices, Windows phones, and most other devices not manufactured by Apple.
  • Key Feature: The ground segment is located on the sleeve end of the connector.

Using Microphones with the Jamstack 2

For your microphone to work correctly with the Jamstack 2, it must either be an Apple product or follow the Apple TRRS standard. This is because the Jamstack 2 is configured to recognize the Apple standard configuration.

How to Check Your Microphone's Compatibility

  1. Look for Specifications: Check the product specifications or documentation. It often mentions compatibility with Apple devices.
  2. Visual Inspection: Compare your connector with the diagram above. The Apple standard typically has the microphone band at the far end (sleeve).
  3. Trial and Error: If unsure, try connecting it to an Apple device. If it works seamlessly, it's likely compatible with the Apple standard.