Astell&Kern Eidolic 2.5mm 4-Pole Balanced Plug for AK240 Audio Sysytem, AK120 II, AK100 II Sound System and Glove Audio, Anodized Aluminum Shell

The Eidolic 2.5mm plug is the first true audio-grade connector for the Astell & Kern music players, providing stellar materials quality, superior ergonomics and a unique appearance.

Design Elements

Perfect size and shape
The 2.5mm connector must be a perfect fit for the exacting specifications of the Astell & Kern lineup, while allowing an easy installation of a variety of headphone, interconnect and in-ear-monitor cables. They have a streamlined 10mm barrel diameter that will fit very compact jack layouts, but a 6.5mm rear opening will fit the vast majority of cables. The flush front face allows dimensional stability when mated with the music player, preventing jack stress.

Ideal installation conditions
The solder contacts inside the plug are thoroughly insulated and properly spaced to allow effortless cable installation. While all 4-contact plugs require extra attention to install, there is ample room inside the barrel so that your cable can be soldered with less difficulty than before. This design has been prototyped and tested over an extended period to ensure it goes the distance. The barrel is treated to ensure its interior is nonconductive and the plug avoids the use of magnetically charged materials wherever possible.

The best metallurgy for each design
A high-conductivity, high strength combination of gold and brass is employed for this connector. Superior plating thickness and complete plating of all plug surfaces set this connector apart.

Unique barrel aesthetics
The Eidolic 2.5mm balanced plug for Astell & Kern is incredibly light and compact due to the choice of materials, which also confer a near-indestructible exterior. The anodized aluminum shell is accented with a interference-repelling carbon fiber ring and the metal surfaces are textured with a proprietary process that yields a tough, matte finish that sparkles in the light. A subtle Eidolic logo is screened and heat-cured onto the upper area of the barrel. Nothing short of a hacksaw can damage the exterior.