Short answer: the Sennheiser HD 620S. It ranks #203 of 481 over-ear headphones by sound quality, rated 3.7/5, at $251.44. The Beyerdynamic DT770 Pro X Limited Edition ranks #227, rated 3.6/5, at $229.99, $21.45 cheaper, which does not close the gap in sound quality.
What the Sennheiser HD 620S does well: Bass from 60 to 200 Hz is lifted about 2.6 dB while sub-bass sits within half a dB of target, giving a punchy, well extended low end. The catch: At 150 ohms and 110 dB SPL/V it is more demanding than most headphones here and benefits from a headphone amp rather than a phone.
What the Beyerdynamic DT770 Pro X Limited Edition does well: Oratory1990’s measurement gives it a preference score of 72, and sub-bass is lifted about 4 dB with a boost of 5 dB at 30 Hz, so electronic and hip hop tracks hit with real rumble. The catch: An 8.5 dB peak near 6.4 kHz and treble about 4 dB high from 6 to 10 kHz can make sibilance and cymbals sound sharp, while a 5 dB dip near 3 kHz pulls vocals back.
Buy the Sennheiser HD 620S. It is rated higher for sound quality, and the $21.45 you would save on the Beyerdynamic DT770 Pro X Limited Edition does not close the gap.
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Bass from 60 to 200 Hz is lifted about 2.6 dB while sub-bass sits within half a dB of target, giving a punchy, well extended low end.
Amazon $251.44 eBay
Oratory1990’s measurement gives it a preference score of 72, and sub-bass is lifted about 4 dB with a boost of 5 dB at 30 Hz, so electronic and hip hop tracks hit with real rumble.
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Specifications Side By Side
| Sennheiser HD 620S | Beyerdynamic DT770 Pro X Limited Edition | |
|---|---|---|
| Price | $251.44 | $229.99 |
| Ranked | #203 of 481 in Over-Ear Headphones | #227 of 481 in Over-Ear Headphones |
| Form Factor | Over-ear | Over-ear |
| Harman Preference Score | 74 (measured by oratory1990, via AutoEQ) | 72 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.19 dB standard deviation | 3.31 dB standard deviation |
| Tonal Tilt | -0.80 (negative is warmer, positive brighter) | -0.05 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+5.3 dB at 30 Hz) |
| Connection | Wired | Wired |
| Back | Closed | Closed |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 42mm dynamic | 1 x 45mm dynamic |
| Impedance | 150 ohms | 48 ohms |
| Sensitivity | 110 dB SPL/V | 98 dB SPL/mW |
| Frequency Response | 6Hz - 30kHz (Manufacturer specified) | 5Hz - 40kHz (Manufacturer specified) |
| Weight | - | 0.7 lbs (305 g) |
| Built-in Microphone | - | No |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the Sennheiser HD 620S from auricularesargentina, boizoff, cammyfi, daemonxar, gadgetrytech, kuulokenurkka, listener and sai; the Beyerdynamic DT770 Pro X Limited Edition from elrics, gadgetrytech and kuulokenurkka, all via squig.link.
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