Philips Fidelio X1/28 Premium Over-Ear Headphones (Discontinued by Manufacturer - 2013 Model) Connectivity Technology: Wired Acoustic open-back architecture for pristine audio fidelity Pre-tilted drivers fit the ears for minimal sound reflection Deluxe memory foam earpads for long-wearing comfort Double layered ear-shells engineered to reduce resonance and vibration, bringing you flawless sound with genuine precision and uncompromised detail Specially tuned diaphragm maintains uniform sound precision