Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty REFURBISHED 2M cable with inline volume

2M cable with inline volume and mute

Data storage – 5 days

GPS You Can Count On

energy-efficient connection

Water Resistant Yes

Sennheiser HD 660S2 Open‑Back Hi-Res Audiophile Headphones, Ultra‑Light Aluminum Voice Coil, Extended Sub‑Bass, 300 Ohm Impedance & Airflow Transducer, Plush Ear Cushions, Premium Comfort, 2Y Warranty REFURBISHED 2M cable with inline volumeFeatures GERMANDESIGNED, IRISHASSEMBLED Expertly engineered components from Germany assembled in Ireland, ensuring consistent build precision and quality EXTENDED SUBBASS IMPACT Redesigned voice coil and optimized airflow double low frequency output for deep, impactful bass without distortion 38MM ULTRALIGHT ALUMINUM VOICE COIL Delivers improved impulse response and pristine clarity across the 8Hz41. 5kHz range. You can feel the lowest note on the