
Independent shopping perspective
The Korena take
HD 660 S 2 is a wired, open-back stereo headphone built around a warm balance, smooth treble, and added emphasis in the lowest octaves. Revised airflow around the transducer, the surround, and the coil are intended to make individual instruments easier to follow while keeping impulse response clean. Its open construction and comfort-focused design suit extended listening, while 42 mm transducers underpin the specified 8 Hz–41.4 kHz response range.


Strong match
Who this is for
- Extended listening where separating individual instruments and uncovering subtle sonic details is the priority.
Consider the trade-offs
When to look elsewhere
- Listeners whose setup calls for a closed-back headphone design.
Final check
Know before you order
- 01The HD 660 S 2 is wired and uses an open-back design.

Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What type of design does the HD 660 S 2 use?
It uses an open-back design.
02What is its specified frequency response?
The specified frequency response is 8 Hz–41.4 kHz.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSound
- Frequency Response
- 8Hz–41.4kHz
1 detailsBody & build
- Color
- Black
2 detailsOther
- Harmonic Distortion
- <0.04%
- Transducers
- 1.653 inch (42 mm)





















