Ultrasone Edition 15 EX Over-Ear Open-Back Audiophile Headphones (Open box) headphone 4.4mm the headphones reach an octave

the headphones reach an octave lower than the lowest audible frequency

The outer tube is made from PVC for maximum flexibility

There are five pieces per side to the housing

so even those longer listening sessions will be effortless

precise and passionate hands take particular care that no mistakes are made

Ultrasone Edition 15 EX Over-Ear Open-Back Audiophile Headphones (Open box) headphone 4.4mm the headphones reach an octaveOver ear, open back, high end headphones Ultrasone Edition 15 Audiophile Headphones Breathtaking Sound First of all, Ultrasone Edition 15 Audiophile Headphones has a breathtaking sound. It comes from a completely new development: gold titanium compound GTC) driver technology. The membrane consists of gold foil and a titanium dome elements that combine to produce an outstandingly transparent sound quality with an incredible degree of precision.