Sennheiser HD 280 Pro Studio Headphones – Stage Sound
SENNHEISER HD 660S2 - Wired Audiophile Stereo Headphones with Deep Sub Bass, Optimized Surround, Transducer Airflow, Vented Magnet System and Voice Coil – Black
Sennheiser HD400 ( 80's model ) advice needed... | Headphone Reviews and Discussion - Head-Fi.org