The Sennheiser HD 550 ranks #5 out of 165 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Sennheiser
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#5 Sennheiser HD 550: $199.95 B&H Photo Video eBay
Pros: A preference score of 94 in oratory1990’s measurement, with only 1.63 dB of deviation and an almost perfectly neutral tilt, means voices, instruments and mixes sound natural and accurate. Midrange and presence stay within about 1 dB of target, so vocals are clear without any harshness. At 237 g it is light, and 106.7 dB/mW sensitivity lets it reach normal levels from most sources despite its 150 ohm impedance.
Cons: Sub-bass averages 6 dB below target and falls 6 dB under by 34 Hz, so deep electronic bass and organ notes lack rumble. A 5.9 dB dip near 9.5 kHz slightly softens cymbal shimmer, and the open back leaks sound and offers no isolation. The Philips Fidelio X2HR earns the same rating for less money.
| Released | Mar 2025 (1 year ago) |
|---|---|
| Back | Open |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.63 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 38mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 6Hz - 39.5kHz (Manufacturer specified) |
| Harman Preference Score | 94 (measured by oratory1990, via AutoEQ) |
| Impedance | 150 ohms |
| Sensitivity | 106.7 dB/mW |
| Sub-bass Extension | Falls 6 dB below target at 34 Hz (-6.8 dB at 30 Hz) |
| Tonal Tilt | +0.01 (negative is warmer, positive brighter) |
| Weight | 0.5 lbs (237 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 | +8.0 dB | 0.70 |
| Peak | 67 Hz | -3.4 dB | 0.34 |
| Peak | 9,968 Hz | +3.2 dB | 1.23 |
| Peak | 1,280 Hz | -2.1 dB | 1.99 |
| Peak | 2,040 Hz | +2.2 dB | 1.90 |
| High shelf | 10,000 Hz | -4.3 dB | 0.70 |
| Peak | 4,135 Hz | +2.3 dB | 5.98 |
| Peak | 5,001 Hz | -1.7 dB | 5.47 |
| Peak | 56 Hz | -0.7 dB | 2.46 |
| Peak | 83 Hz | +0.6 dB | 3.02 |
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