How to Use MMCX to Lightning Audio Cable with Etymotic Earphones
By Etymotic | Published: 2026-10-18
Category: How-to Guides
Learn how to set up and use the MMCX to Lightning Audio Cable with your Etymotic earphones, including connection steps, controls, and common mistakes to avoid.
Quick Answer
To use the MMCX to Lightning Audio Cable with your Etymotic earphones, simply attach the cable's MMCX connectors to each earpiece, plug the Lightning end into your iPhone, and use the inline controls for calls, volume, and playback.
Why Choose a Lightning Cable for Your Etymotic Earphones
If you own an iPhone and a pair of Etymotic ER series earphones, the MMCX to Lightning Audio Cable lets you keep using your favorite wired earphones without needing a separate digital-to-analog converter or adapter. The cable is designed specifically for Etymotic earphones, so the fit is secure and the signal path is optimized for Apple devices.
One trade-off to consider: this cable is only for iPhones with a Lightning port. If you have an Android device or a newer iPhone with USB-C, this cable won't work for you. Also, because it's a digital connection, the cable handles the audio conversion internally, which can affect sound quality depending on the cable's built-in DAC.
Step-by-Step Setup and Use
- Attach the MMCX connectors to your earphones: Hold the earpiece with the MMCX port facing up. Align the cable's connector with the port and push straight in until you feel a click. Do not twist or force it—misalignment can bend the pins. Check that both connectors are fully seated and click firmly before use.
- Plug the Lightning end into your iPhone: Insert the Lightning connector into your iPhone's charging port. Make sure it's fully inserted; a loose connection can cause intermittent audio or no sound at all. If you have a phone case, ensure the Lightning plug fits through the opening; otherwise, remove the case to avoid a poor connection.
- Test the controls and audio: Play music from your iPhone and test the inline controls: press the center button to play/pause, use the volume buttons to adjust, and use the microphone for calls. If the controls don't respond, check that the cable is fully plugged in and your iPhone's iOS is up to date. If audio plays but controls don't work, try unplugging and re-plugging the cable; if the issue persists, test with another iOS device to isolate the problem.
Product Fact
- MMCX to Lightning Audio Cable: The MMCX to Lightning Audio Cable is designed for the Etymotic ER Earphone Series and lets iPhone users use their Etymotic earphones with current model iPhones. This means you can enjoy your Etymotic earphones with your iPhone without needing an extra adapter, and you get convenient inline controls for calls, volume, and playback.
MMCX to Lightning Audio Cable
