Home page - Headsets and microphones

Headphones Sennheiser HD 660S2

Sennheiser 4260752330374 700240 VOISEN360
BAR Code: 4260752330374
SKU Code: 700240
User Code: VOISEN360
Warranty: 2 years
Headphones Sennheiser HD 660S2
Not in stock

Nothing makes music feel dramatic like powerful bass. The extremely precise yet non-fatiguing sound of the HD 660S2 now delivers even more impact with extended sub bass. Our engineers optimized the HD 660S's surround, transducer airflow, and coil to double the sound pressure at the lowest octaves. You can feel the lowest note on the piano (27.5 Hz) or the kick of the bass drum (45-60 Hz) as if you were there. The relaxed tone and open-back design make this extremely comfortable headphone great for long sessions. With warm tuning, smooth treble, and strong bass, the standard-setter for extended listening is now the standard-setter for extended bass as well.


  • Natural, relaxed, high-fidelity sound with extra sub bass: Optimized surround and diaphragm with new voice coil with 300-ohm impedance
  • Exceptional comfort and build quality: The open-back design offers exceptional breathability for long listening sessions
  • 38mm high-performance transducers built in Ireland: Steel mesh damping follows the driver’s geometry to control air displacement, while the magnetic yoke includes milled air vents for optimal ventilation, which minimizes distortion
  • Frequency response: 8 Hz - 41,500 Hz
  • Detachable cables: 6.3mm & 4.4mm, + 3.5mm adapter. 1.8m cable length for comfortable desktop use


Device type Headphones
Headphones type On-ear
Wireless connection No
Connection 3,5 mm and 6,3 mm
Combo 3,5 mm jack (🎧 + 🎤) No
Control pad No
Microphone No


Driver diameter 38 mm
Frequency response 8 Hz - 41,500 Hz
Impedance 300 Ω
SPL 104 dB (1 V)
THD < 0.04% (1 kHz, 100dB)
Cable length 1.8 m

Product dimensions

Dimensions 242 x 182 x 100 mm
Weight 260 g


Products are intended only for resale partners.

Application for partners is available here.