Sennheiser HD 560S, Open back reference-grade headphones for audio enthusiasts, Over Ear , Black: Amazon.co.uk: Electronics & Photo
Sennheiser HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black : Amazon.co.uk: Musical Instruments & DJ
Sennheiser HD 450BT Noise Cancelling Bluetooth Over-Ear Headphones with Mic/Remote, Black