The OneOdio Monitor 80 ranks #35 out of 512 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: OneOdio
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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#35 OneOdio Monitor 80: $94.52 Amazon $94.52 eBay
Pros: An open-back wired headphone at about $95 with a preference score of 89. Bass through presence stays within 2 dB of target, so mids and voices sound natural, and the open design sounds spacious.
Cons: Sub bass falls 6 dB below target at 36 Hz, and a 7 dB peak near 7.7 kHz after a 5.8 dB dip near 5 kHz makes the treble uneven. At 250 ohms it needs a headphone amp, and the Superlux HD 668B rates the same for less. See headphone amps and DACs with enough power to drive it.
Is the OneOdio Monitor 80 right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 89).
Skip it if
- you will plug straight into a phone or laptop: at 250 ohms it needs a headphone amp.
- you want more bass (about 3 dB below target).
- you need isolation or will use it in public: open-back headphones leak sound both ways.
| Back | Open |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.14 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 40mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 10Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 89 (1 squig.link measurement, calibrated to AutoEQ) |
| Impedance | 250 ohms |
| Sensitivity | 100 dB ±3 dB |
| Sub-bass Extension | Falls 6 dB below target at 36 Hz (-7.6 dB at 30 Hz) |
| Tonal Tilt | -0.04 (negative is warmer, positive brighter) |
EQ Presets
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 Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 100 out of 100, up from 89.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.2 dB | 0.70 |
| High shelf | 10,000 Hz | -2.6 dB | 0.70 |
| Peak | 32 Hz | +2.5 dB | 1.72 |
| Peak | 109 Hz | -3.6 dB | 0.88 |
| Peak | 4,935 Hz | +6.0 dB | 4.49 |
| Peak | 7,478 Hz | -6.2 dB | 5.90 |
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: 100 out of 100, up from 70.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.5 dB | 0.70 |
| High shelf | 10,000 Hz | -2.6 dB | 0.70 |
| Peak | 23 Hz | +4.6 dB | 2.07 |
| Peak | 103 Hz | -4.4 dB | 0.84 |
| Peak | 4,935 Hz | +6.0 dB | 4.49 |
| Peak | 7,478 Hz | -6.2 dB | 5.91 |
Studio flat 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 Studio flat match with this EQ: 100 out of 100, up from 43.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.4 dB | 0.70 |
| High shelf | 10,000 Hz | +1.9 dB | 0.70 |
| Peak | 23 Hz | +4.4 dB | 1.98 |
| Peak | 55 Hz | -1.0 dB | 2.79 |
| Peak | 132 Hz | -5.4 dB | 0.63 |
| Peak | 897 Hz | -1.4 dB | 3.90 |
| Peak | 2,193 Hz | +3.7 dB | 2.19 |
| Peak | 4,760 Hz | +5.9 dB | 3.14 |
| Peak | 5,448 Hz | +1.4 dB | 6.00 |
| Peak | 7,350 Hz | -5.7 dB | 5.05 |
Warm target
Set a preamp of -6.4 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: 100 out of 100, up from 76.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.3 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 32 Hz | +2.4 dB | 1.69 |
| Peak | 109 Hz | -3.4 dB | 0.94 |
| Peak | 219 Hz | -1.3 dB | 2.86 |
| Peak | 2,948 Hz | -2.7 dB | 3.63 |
| Peak | 5,041 Hz | +4.9 dB | 6.00 |
| Peak | 6,643 Hz | -1.6 dB | 6.00 |
| Peak | 7,467 Hz | -8.3 dB | 5.96 |
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: 100 out of 100, up from 74.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.7 dB | 0.70 |
| High shelf | 10,000 Hz | -2.6 dB | 0.70 |
| Peak | 166 Hz | -2.8 dB | 0.99 |
| Peak | 4,935 Hz | +6.0 dB | 4.50 |
| Peak | 7,478 Hz | -6.2 dB | 5.90 |
Bright target
Set a preamp of -6.5 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 100 out of 100, up from 54.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.6 dB | 0.70 |
| High shelf | 10,000 Hz | +1.2 dB | 0.70 |
| Peak | 23 Hz | +4.6 dB | 2.04 |
| Peak | 54 Hz | -1.3 dB | 3.30 |
| Peak | 103 Hz | -4.4 dB | 0.84 |
| Peak | 226 Hz | -1.3 dB | 2.84 |
| Peak | 4,905 Hz | +6.0 dB | 2.30 |
| Peak | 5,756 Hz | +2.2 dB | 6.00 |
| Peak | 7,533 Hz | -3.2 dB | 6.00 |
V-shaped 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 Speaker Ranking from a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 94 out of 100, up from 79.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.9 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 4,875 Hz | +6.0 dB | 1.90 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the OneOdio Monitor 80 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 gadgetrytech. Thanks to them for publishing their work.