The XK-Audio Fluxion ranks #177 out of 479 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Prices on this page were last checked October 16, 2026 at 5:46 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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#177 XK-Audio Fluxion: $500 eBay
Pros: A broadly balanced tuning with a preference score of 77 against the Harman target.
Cons: The rating reflects sound quality only; comfort, build and noise isolation are not part of the score.
Is the XK-Audio Fluxion right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 77).
- your taste runs warm: it scores 81 for that sound.
Skip it if
- you want deep sub-bass: it falls away below about 28 Hz.
- you need isolation or will use it in public: open-back headphones leak sound both ways.
- you want the best value: the higher-rated Sennheiser HD 550 costs about $300 less.
| Back | Open |
|---|---|
| Connection | Wired (3.5mm detachable) |
| Deviation From Target | 2.49 dB standard deviation |
| Driver Type | Planar Magnetic |
| Drivers | 1 Planar Magnetic |
| Form Factor | Over-ear |
| Harman Preference Score | 77 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Falls 6 dB below target at 28 Hz (-5.2 dB at 30 Hz) |
| Tonal Tilt | -0.32 (negative is warmer, positive brighter) |
EQ Presets
Neutral target
Set a preamp of -3.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 75 out of 100, up from 61.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.3 dB | 0.70 |
| High shelf | 10,000 Hz | -4.7 dB | 0.70 |
| Peak | 23 Hz | +6.0 dB | 3.59 |
| Peak | 45 Hz | -4.3 dB | 1.70 |
| Peak | 231 Hz | -1.3 dB | 0.84 |
| Peak | 910 Hz | -3.1 dB | 5.49 |
| Peak | 1,708 Hz | +2.4 dB | 2.89 |
| Peak | 3,109 Hz | -2.1 dB | 3.91 |
| Peak | 7,616 Hz | +2.0 dB | 5.21 |
Studio flat target
Set a preamp of -4.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 69 out of 100, up from 30.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -4.2 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 23 Hz | +6.0 dB | 2.74 |
| Peak | 35 Hz | -2.1 dB | 6.00 |
| Peak | 45 Hz | -4.3 dB | 2.40 |
| Peak | 198 Hz | -2.6 dB | 0.75 |
| Peak | 851 Hz | -1.8 dB | 0.40 |
| Peak | 1,471 Hz | +2.4 dB | 1.80 |
| Peak | 2,036 Hz | +4.9 dB | 2.43 |
Bass 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 Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 77 out of 100, up from 76.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.9 dB | 0.70 |
| High shelf | 10,000 Hz | -4.7 dB | 0.70 |
| Peak | 28 Hz | +1.4 dB | 3.00 |
| Peak | 42 Hz | -1.3 dB | 4.88 |
| Peak | 264 Hz | -1.4 dB | 1.45 |
| Peak | 910 Hz | -3.1 dB | 5.47 |
| Peak | 1,708 Hz | +2.4 dB | 2.89 |
| Peak | 3,110 Hz | -2.1 dB | 3.90 |
| Peak | 7,616 Hz | +2.0 dB | 5.24 |
Bright target
Set a preamp of -3.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 69 out of 100, up from 41.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.3 dB | 0.70 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 23 Hz | +6.0 dB | 3.63 |
| Peak | 45 Hz | -4.3 dB | 1.68 |
| Peak | 232 Hz | -1.4 dB | 0.81 |
| Peak | 909 Hz | -3.2 dB | 5.17 |
| Peak | 1,708 Hz | +2.3 dB | 2.79 |
| Peak | 3,028 Hz | -2.0 dB | 5.56 |
| Peak | 6,298 Hz | +2.5 dB | 0.93 |
V-shaped target
Set a preamp of -5.5 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 66 out of 100, up from 64.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.4 dB | 0.70 |
| Peak | 44 Hz | -1.0 dB | 5.35 |
| Peak | 106 Hz | +1.5 dB | 1.64 |
| Peak | 917 Hz | -3.7 dB | 5.16 |
| Peak | 1,764 Hz | +2.3 dB | 2.98 |
| Peak | 3,058 Hz | -2.1 dB | 5.40 |
| Peak | 5,780 Hz | +2.6 dB | 0.66 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the XK-Audio Fluxion measures across the audible range, against the Harman over-ear target that most listeners prefer in blind tests. Where the line sits above the target that range sounds louder (more bass, brighter treble), below it quieter. The curve is the median of 4 independent measurements, so one odd sample or rig cannot skew it, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: median of 4 measurements from the squig.link databases of boizoff, dl, kuulokenurkka and sai. Thanks to each of them for publishing their work.