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:
- Tip (T)
- Ring (R)
- Ring (R)
- 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
- Look for Specifications: Check the product specifications or documentation. It often mentions compatibility with Apple devices.
- Visual Inspection: Compare your connector with the diagram above. The Apple standard typically has the microphone band at the far end (sleeve).
- Trial and Error: If unsure, try connecting it to an Apple device. If it works seamlessly, it's likely compatible with the Apple standard.