The Auribus Acoustics Sierra Reference ranks #45 out of 512 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Prices on this page were last checked October 20, 2026 at 10:35 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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#45 Auribus Acoustics Sierra Reference: $1200.00 Apos Audio $1200.00 eBay
Pros: An open-back headphone with a 50 mm paper cone dynamic driver and a preference score of 88. Sub bass reaches to 20 Hz and every band up to 5 kHz stays within 1.5 dB of target, so bass and voices sound natural.
Cons: Treble is uneven: a 17 dB dip near 9.2 kHz and a 7 dB dip near 6.1 kHz around a 6 dB peak near 10.3 kHz soften cymbals unevenly. At $1200 the HIFIMAN Arya Organic rates higher for less, and the score rests on a single measurement.
Is the Auribus Acoustics Sierra Reference right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 88).
- you are sensitive to bright or sharp treble (treble sits 2.8 dB below target).
Skip it if
- you need isolation or will use it in public: open-back headphones leak sound both ways.
| Released | Apr 2026 (6 months ago) |
|---|---|
| Back | Open |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.05 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 50mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 88 (1 squig.link measurement, calibrated to AutoEQ) |
| Impedance | 20 ohms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.1 dB at 30 Hz) |
| Tonal Tilt | -0.16 (negative is warmer, positive brighter) |
| Weight | 0.7 lbs (340 g) |
EQ Presets
Harman target
Set a preamp of -5.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 93 out of 100, up from 88.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.5 dB | 0.70 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 2,828 Hz | -2.0 dB | 6.00 |
| Peak | 3,722 Hz | +3.6 dB | 6.00 |
| Peak | 5,985 Hz | +5.7 dB | 5.63 |
Neutral target
Set a preamp of -5.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 91 out of 100, up from 68.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -4.2 dB | 0.70 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 2,828 Hz | -2.0 dB | 6.00 |
| Peak | 3,722 Hz | +3.6 dB | 6.00 |
| Peak | 5,985 Hz | +5.7 dB | 5.62 |
Studio flat target
Set a preamp of -4.6 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 87 out of 100, up from 40.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -6.1 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 906 Hz | -1.1 dB | 0.40 |
| Peak | 1,732 Hz | +1.7 dB | 4.01 |
| Peak | 2,034 Hz | +2.5 dB | 4.66 |
| Peak | 3,607 Hz | +2.2 dB | 6.00 |
| Peak | 5,345 Hz | +2.8 dB | 0.40 |
Warm target
Set a preamp of -3.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 95 out of 100, up from 84.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.7 dB | 0.70 |
| High shelf | 10,000 Hz | -4.4 dB | 0.70 |
| Peak | 182 Hz | +1.2 dB | 0.50 |
| Peak | 954 Hz | -1.2 dB | 3.52 |
| Peak | 2,777 Hz | -3.2 dB | 6.00 |
| Peak | 3,655 Hz | +1.8 dB | 6.00 |
| Peak | 6,128 Hz | +4.0 dB | 6.00 |
Bass target
Set a preamp of -5.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 92 out of 100, up from 78.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.3 dB | 0.70 |
| High shelf | 10,000 Hz | -1.3 dB | 0.70 |
| Peak | 2,828 Hz | -2.0 dB | 6.00 |
| Peak | 3,722 Hz | +3.6 dB | 6.00 |
| Peak | 5,985 Hz | +5.7 dB | 5.64 |
Bright target
Set a preamp of -4.6 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 80 out of 100, up from 47.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -4.3 dB | 0.70 |
| High shelf | 10,000 Hz | +0.6 dB | 0.70 |
| Peak | 2,816 Hz | -2.7 dB | 6.00 |
| Peak | 3,705 Hz | +2.1 dB | 6.00 |
| Peak | 5,016 Hz | +4.2 dB | 1.12 |
V-shaped 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 Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 72 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.9 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 173 Hz | +2.3 dB | 0.59 |
| Peak | 2,835 Hz | -2.3 dB | 6.00 |
| Peak | 3,696 Hz | +2.3 dB | 6.00 |
| Peak | 5,016 Hz | +4.6 dB | 1.03 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the Auribus Acoustics Sierra Reference 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 a single measurement, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: a single measurement from the squig.link database of superreview. Thanks to them for publishing their work.