QED Performance Headphone Extension Cable 3.5mm (3m Single)

The QED Performance 3.5mm Headphone Extension sits within QED's Performance range — the company's mid-tier cable series designed for listeners who want measurably better signal transfer without moving to the Reference tier. It extends the reach of quality headphones to an AV amplifier, DAP, or other audio source whilst preserving the signal path that the headphones were designed to reproduce.

Conductor and Geometry

The cable uses 99.999% oxygen-free copper (OFC) conductors, providing a low-resistance audio path between source and headphones. QED's crosstalk minimising geometry optimises the signal return path to reduce interference between the left and right audio channels — a consideration that becomes more significant over longer cable runs where channel separation can degrade.

Connectors and Construction

Both ends carry gold-plated, close-tolerance 3.5mm stereo connectors: a male plug for the source device and a female socket for the headphone cable. The stepped jack plug design allows connection even when a device is fitted with a protective case — a practical detail that avoids the need to remove cases before listening. The cable itself uses QED's eFlex cordage with an ergonomic soft PVC jacket in a graphite finish, giving a 5mm outer diameter that balances flexibility with durability.

Range Position

Within QED's headphone cable lineup, the Performance 3.5mm Headphone Extension shares the same conductor grade and geometry principles as the Performance 6.35mm Headphone Extension, differing only in connector size. For listeners using full-size headphones with a 6.35mm jack, QED offers the equivalent extension in that format.