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 6 GHz Cortex-A53)

6 GHz Cortex-A53)

Active noise cancellation substantially reduces unwanted ambient sound

Large Water Tank for Extra-Long Endurance

1 x Type C USB Cable

Brand Color Black

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 6 GHz Cortex-A53)Features 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