OFHC stands for Oxygen-Free High Thermal Conductivity.

OFHC copper is also referred to as Oxygen-free copper (OFC). It is highly conductive.

Characteristics of OFHC copper are more ductility, high thermal & electrical conductivity, high impact strength, more resistance and an easier welding process. Conductivity in ordinary metals, such as copper or silver, is limited by the presence of impurities and other defects. By reducing the extremely low level of impurities the inherent properties of copper are enhanced to a high degree. The OFHC metals thus obtained have a copper content of 99.99%.

Headphone Adapter 2.5mm to 4.4mm
Headphone Adapter 2.5mm to 4.4mm
iFi audio 2.5mm to 4.4mm headphone Adapter

Headphone Adapter

2.5mm to 4.4mm

Convert your 2.5mm headphones to fit 4.4mm Balanced outputs

2.5 to 4.4? Easy!

So, do your favourite balanced headphones have a 2.5mm jack?

More and more products are boasting the 4.4mm Balanced output, meaning your 2.5mm just won’t fit the bill!

Put those frustrations aside and get the iFi 2.5mm to 4.4mm Headphone Adapter. Strong and robust, it’s perfect for the job.


Dimensions44x24x11mm (1.7"x0.9"x0.4")
Weight6.3g (0.2 oz)
iFi audio 2.5mm to 4.4mm headphone Adapter


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