Sennheiser HD 800S vs Sennheiser HD 660S2
Sennheiser HD 800S wins — The HD 800S outperforms the HD 660S2 on soundstage width (9
Scores: Sennheiser HD 800S 8.5/10 · Sennheiser HD 660S2 7.5/10
The HD 800S outperforms the HD 660S2 on soundstage width (9.1 vs 7.2 RTINGS) and treble extension to 51 kHz, making it the reference choice for analytical listening. The HD 660S2 closes the gap with lighter 260 g weight and improved bass over the original 660S while costing significantly less. Neither includes a cable or case in the base package.
Spec-by-spec comparison
| Sennheiser HD 800S | Sennheiser HD 660S2 |
|---|
| Impedance | 300 Ω | 300 Ω |
|---|
| Driver Size | 56 mm | 38 mm |
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| Frequency Response | 4 Hz – 51 kHz | 4 Hz – 41 kHz |
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| Weight | 330 g | 260 g |
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Sennheiser HD 800S
What works
- 56 mm ring-radiator drivers deliver 4 Hz – 51 kHz response (per Sennheiser)
- Exceptional soundstage width measured at 120+ degrees in RTINGS testing
- Low distortion below 0.1% across most frequencies (per Audio Science Review)
What doesn't
- Requires powerful amp due to 300 Ω impedance
- 330 g weight causes fatigue after 2+ hours
Sennheiser HD 660S2
What works
- 38 mm drivers with 4 Hz – 41 kHz response and improved bass extension (per Sennheiser)
- Lower weight at 260 g reduces fatigue versus prior models
- 300 Ω impedance pairs well with mid-tier amps
What doesn't
- Narrower soundstage than HD 800S (RTINGS scores 7.2 vs 9.1)
- Less air and detail in upper treble
Bottom line
Our pick: Sennheiser HD 800S.
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