Short answer: the Sennheiser HD 600. It ranks #8 of 165 over-ear headphones by sound quality, rated 4.4/5, at $272.36; the Sennheiser HD 820 ranks #139, rated 2.7/5, and costs $1,999.95, which makes this an easy call rather than a real tradeoff.
The Sennheiser HD 600 is the better-sounding pick. It earns a preference score of 91, with the midrange from 200 Hz to 6 kHz within about 0.1 dB of target, giving vocals and acoustic instruments a very natural tone. The tradeoff: Sub-bass is about 7.9 dB below target, so bass lacks rumble and weight on electronic and hip hop tracks.
What the Sennheiser HD 820 does well: It is a closed back flagship, so it isolates and keeps sound in, unlike most headphones at this price. Watch for: In oratory1990’s measurement presence and treble sit about 3 dB below target from 3 to 10 kHz with a 6.6 dB dip near 11.7 kHz, so cymbals and detail sound dull and veiled.
Buy the Sennheiser HD 600. It is rated higher for sound quality than the Sennheiser HD 820 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| Sennheiser HD 600 | Sennheiser HD 820 | |
|---|---|---|
| Price | $272.36 | $1,999.95 |
| Ranked | #8 of 165 in Over-Ear Headphones | #139 of 165 in Over-Ear Headphones |
| Form Factor | Over-ear | Over-ear |
| Back | Open | Closed |
| Connection | Wired | Wired |
| Harman Preference Score | 91 (measured by oratory1990, via AutoEQ) | 52 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 1.88 dB standard deviation | 3.55 dB standard deviation |
| Tonal Tilt | +0.02 (negative is warmer, positive brighter) | -1.15 (negative is warmer, positive brighter) |
| Sub-bass Extension | Falls 6 dB below target at 42 Hz (-8.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+4.0 dB at 30 Hz) |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 42mm dynamic | 1 x 56mm dynamic |
| Impedance | 300 ohms | 300 ohms |
| Sensitivity | 97 dB SPL/V | 103 dB SPL/V |
| Weight | 0.6 lbs (260 g) | 0.8 lbs (360 g) |
| Frequency Response | 12Hz - 40.5kHz (Manufacturer specified) | 12Hz - 43.8kHz (Manufacturer specified) |
| Built-in Microphone | - | No |
Related Headphone Comparisons
How Sennheiser HD 600 compares with other leading options:
- Sennheiser HD 550 vs Sennheiser HD 600
- Austrian Audio Hi-X60 vs Sennheiser HD 600
- Beyerdynamic MMX 300 vs Sennheiser HD 600
- Sennheiser HD 600 vs Sennheiser HD 505
- Sennheiser HD 600 vs Sennheiser HD 650
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The Two Headphones In Full
Sennheiser HD 600: $272.36 Amazon eBay
Pros: It earns a preference score of 91, with the midrange from 200 Hz to 6 kHz within about 0.1 dB of target, giving vocals and acoustic instruments a very natural tone. At 260 g it is light, and the long-running design from 1997 remains a reference for neutral midrange tuning. The warm and neutral tilt suits listeners who dislike bright treble.
Cons: Sub-bass is about 7.9 dB below target, so bass lacks rumble and weight on electronic and hip hop tracks. Treble from 6 to 10 kHz is about 3.6 dB low, with a 7.5 dB dip near 9.6 kHz that softens cymbals. At 300 ohms and 97 dB SPL/V it needs a dedicated headphone amp for proper volume, and the open back leaks sound.
Full Sennheiser HD 600 review and specifications →
| Released | 1997 (29 years ago) |
|---|---|
| Back | Open |
| Connection | Wired |
| Deviation From Target | 1.88 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 42mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 12Hz - 40.5kHz (Manufacturer specified) |
| Harman Preference Score | 91 (measured by oratory1990, via AutoEQ) |
| Impedance | 300 ohms |
| Sensitivity | 97 dB SPL/V |
| Sub-bass Extension | Falls 6 dB below target at 42 Hz (-8.6 dB at 30 Hz) |
| Tonal Tilt | +0.02 (negative is warmer, positive brighter) |
| Weight | 0.6 lbs (260 g) |
EQ preset to match the Harman target
Set a preamp of -6.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +6.5 dB | 0.70 |
| Peak | 125 Hz | -2.7 dB | 0.55 |
| Peak | 8,445 Hz | +3.3 dB | 1.61 |
| Peak | 522 Hz | +0.7 dB | 1.02 |
| Peak | 1,298 Hz | -1.2 dB | 2.14 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 3,158 Hz | -1.8 dB | 3.67 |
| Peak | 2,166 Hz | +0.9 dB | 3.32 |
| Peak | 6,639 Hz | +2.2 dB | 5.82 |
| Peak | 5,433 Hz | -1.2 dB | 5.70 |
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Sennheiser HD 820: $1,999.95 Amazon eBay
Pros: It is a closed back flagship, so it isolates and keeps sound in, unlike most headphones at this price. Bass sits 3 to 4 dB above the Harman target and holds down to 20 Hz, which suits warm and bassy taste profiles. It rates above the AKG K872 Pro and the Fostex TH900 at about the same price.
Cons: In oratory1990’s measurement presence and treble sit about 3 dB below target from 3 to 10 kHz with a 6.6 dB dip near 11.7 kHz, so cymbals and detail sound dull and veiled. The 300 ohm impedance needs a dedicated headphone amp to reach proper volume, and the Dan Clark Audio Voce and the Focal Stellia both rate higher.
Full Sennheiser HD 820 review and specifications →
| Released | 2018 (8 years ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 3.55 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 56mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 12Hz - 43.8kHz (Manufacturer specified) |
| Harman Preference Score | 52 (measured by oratory1990, via AutoEQ) |
| Impedance | 300 ohms |
| Sensitivity | 103 dB SPL/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+4.0 dB at 30 Hz) |
| Tonal Tilt | -1.15 (negative is warmer, positive brighter) |
| Weight | 0.8 lbs (360 g) |
EQ preset to match the Harman target
Set a preamp of -6.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.9 dB | 0.70 |
| Peak | 147 Hz | -8.6 dB | 1.79 |
| Peak | 294 Hz | +7.6 dB | 2.24 |
| Peak | 5,732 Hz | +1.8 dB | 0.18 |
| Peak | 965 Hz | -3.9 dB | 1.74 |
| High shelf | 10,000 Hz | -1.1 dB | 0.70 |
| Peak | 74 Hz | +6.7 dB | 2.74 |
| Peak | 69 Hz | -2.8 dB | 0.80 |
| Peak | 3,823 Hz | +3.6 dB | 5.33 |
| Peak | 5,091 Hz | -4.0 dB | 5.68 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons