At a glance
Sennheiser HD 660S in 5 facts
- Type: Over-ear headphones, wired
- Frequency response: 9 Hz to 41.5 kHz
- Impedance: 150 Ω
- Driver type: Dynamic
- HiFi Specs score: 8.3/10, the average of 9 rated aspects
Verdict
The short version
My experience owning and using the Sennheiser HD 660 S Headphones has been mostly positive. Despite feeling slightly plasticky, these headphones are incredibly comfortable, delivering high-quality sound across all frequencies. The open-back design captures intricate details exceptionally well, enhancing the overall audio experience. However, there are drawbacks such as sound leakage due to the open-back design and the need for a powerful DAC or sound card. Even so, for those in search of a superior audio experience, these headphones are worth the investment. HiFi Specs score from 9 rated aspects · compared across 20 headphones
Datasheet
The numbers
- Wearing style
- Over-ear
- Design
- Open-back
- Driver type
- Dynamic
- Driver size
- 44.1 mm
- Frequency response
- 9 Hz to 41.5 kHz
- Impedance
- 150 Ω
- Maximum SPL
- 104 dB
- Distortion (THD)
- 0 %
Connections
Connectivity & battery
- Connectivity
- Wired
- Wireless
- No
- Cable
- Detachable
- Cable length
- 3 m 9.8 ft
Physical
Dimensions, weight, placement
- Replaceable earpads
- Yes
- Width
- 7.1 in 180 mm
- Depth
- 7.7 in 196 mm
- Weight
- 600 g 21.2 oz
- Colors
- Black
From our review
What we found
Compared across 20 headphones
How it scored
Availability
Where to buy
The Sennheiser HD 660S isn't sold new any more. The closest current model is the Sennheiser HD 660S2.
Why this one: Direct successor in the HD 660S line, same open back over ear design and driver size
We don't show live prices. This is our editorial price tier, last checked Mar 28, 2020. As an Amazon Associate, HiFi Specs earns from qualifying purchases. Our scores and reviews are never influenced by affiliate partners.