Sennheiser HD 6XX Review: Ranked #70 of 308

Last updated: October 13, 2026

The Sennheiser HD 6XX ranks #70 out of 308 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Sennheiser

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Sennheiser HD 6XX - ranked #70 of 308 Over-Ear Headphones · Editor's rating 4.1/5

#70 Sennheiser HD 6XX eBay

Pros: Measured response gives it an excellent Harman preference score of 84 with a 2.10 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. It uses 1 x 42mm dynamic.

Cons: Sub-bass is 7.9 dB short at 30 Hz, so deep bass lacks rumble. Treble sits about 4.9 dB low, so it sounds a little dark.

ReleasedNov 2016 (9 years ago)
BackOpen
ConnectionWired
Deviation From Target2.10 dB standard deviation
Driver TypeDynamic
Drivers1 x 42mm dynamic
Form FactorOver-ear
Frequency Response10Hz - 41kHz
Harman Preference Score84 (measured by oratory1990, via AutoEQ)
Impedance300 ohms
Sensitivity103 dB/Vrms
Sub-bass ExtensionFalls 6 dB below target at 40 Hz (-7.9 dB at 30 Hz)
Tonal Tilt-0.27 (negative is warmer, positive brighter)
Weight0.6 lbs (260g)
EQ preset to match the Harman target

Set a preamp of -6.1 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.

FilterFrequencyGainQ
Low shelf105 Hz+6.4 dB0.70
Peak8,800 Hz+5.1 dB1.42
Peak118 Hz-3.1 dB0.50
Peak37 Hz+0.7 dB3.96
Peak3,169 Hz-1.7 dB3.89
High shelf10,000 Hz-2.1 dB0.70
Peak1,227 Hz-1.2 dB2.53
Peak2,055 Hz+1.2 dB3.23
Peak587 Hz+0.4 dB1.19
Peak5,332 Hz-1.1 dB5.75

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