How to Extend Your Shure Headphone Cable With SHR-EAC3BK
By Addicted To Audio - Home Audio Electronics & Accessories | Published: 2026-10-24
Category: How-to Guides
Learn how to quickly and safely extend your Shure SE series earphones using the SHR-EAC3BK 91cm extension cable, with step-by-step instructions and common pitfalls to avoid.
Quick Answer
To extend your Shure SE series earphones, simply plug the male end of the SHR-EAC3BK 91cm extension cable into your earphone's female connector, then plug your audio source into the extension's female end. Ensure both connections are fully seated for reliable audio.
Why Use the SHR-EAC3BK Extension Cable
The Shure SHR-EAC3BK is a 91 cm extension cable designed specifically for modular Shure earphones like the SE110, SE210, SE310, SE420, SE530/530PTH, and E500PTH models. Its recessed plug fits snugly into iPhone jacks, making it a practical choice for mobile use. The extension adds just over three feet of length, giving you more freedom to move while keeping your source device on a desk or in a pocket.
Important Compatibility Note
This extension works only with Shure earphones that have a detachable cable at the earpiece. It is not compatible with fixed-cable models or other brands unless they use the same 3.5mm connector. The cable has a male 3.5mm plug and a female 3.5mm jack, so it adds length between your earphones and your source, not between the earpieces themselves.
Step-by-Step Setup Guide
- 1. Identify the connectors: Locate the male 3.5mm plug (the end you insert) and the female 3.5mm jack (the end you plug into) on the SHR-EAC3BK cable. The male end has a recessed tip designed to fit into tight jacks like those on iPhones. Make sure you are connecting the correct ends—do not force the female jack into your earphone.
- 2. Connect the extension to your earphones: Insert the male plug of the extension cable firmly into the female connector on your Shure earphone cable. Push until you feel a slight click or resistance, indicating a full connection. A loose connection can cause intermittent audio or static; always ensure the plug is fully seated.
- 3. Connect your audio source: Plug the female jack of the extension cable into your audio source (phone, DAP, or amp). The recessed plug on the male end helps it fit into deep or recessed jacks, but the female end is standard and should connect easily. If the connection feels loose, check that the source jack is clean and free of debris.
- 4. Test the audio: Play a familiar track and listen for any crackling, dropouts, or imbalance. Gently wiggle the cable near both connections to verify they are secure. If audio cuts out, re-seat the plugs. Persistent noise may indicate a damaged cable or connector; try a different source to isolate the issue.
Product Facts
- Shure SHR-EAC3BK 91cm Extension Cable: 91 cm extension cable with 1/8 inch (3.5mm) male to female connectors. Recessed plug fits iPhone jack. The recessed plug ensures a flush connection with many phone cases, so you don't have to remove the case to use the extension.
Shure SHR-EAC3BK 91cm Extension Cable
