The Fostex x Massdrop TH-X00 ranks #52 out of 523 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Fostex
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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#52 Fostex x Massdrop TH-X00: $399 Discontinued eBay
Pros: A closed back over-ear with mahogany cups and a high preference score of 88 across two measurements. Bass reaches 20 Hz, the midrange stays within about 0.5 dB of target, and at 25 ohms it is easy to drive.
Cons: Treble is uneven, with a 6.9 dB dip near 8.9 kHz next to a 5.7 dB peak near 11.2 kHz, and presence sits 2.1 dB low. It is discontinued after selling for $399, and new pairs are rare.
Is the Fostex x Massdrop TH-X00 right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 88).
- your taste runs warm: it scores 93 for that sound.
- you are sensitive to bright or sharp treble (treble sits 2.4 dB below target).
Skip it if
- you want to buy it new: it is discontinued.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.84 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 50mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 5Hz - 45kHz (Manufacturer specified) |
| Harman Preference Score | 88 (average of 2 squig.link measurements scored separately, calibrated to AutoEQ) |
| Impedance | 25 ohms |
| Sensitivity | 94 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.0 dB at 30 Hz) |
| Tonal Tilt | -0.35 (negative is warmer, positive brighter) |
| Weight | 0.8 lbs (350 g) |
EQ Presets
Harman target
Set a preamp of -5.9 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 average of 2 independent measurements 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 | +2.8 dB | 0.70 |
| High shelf | 10,000 Hz | -3.7 dB | 0.70 |
| Peak | 23 Hz | +3.3 dB | 4.02 |
| Peak | 62 Hz | -1.2 dB | 0.74 |
| Peak | 3,592 Hz | +5.4 dB | 2.97 |
| Peak | 5,487 Hz | -3.4 dB | 6.00 |
| Peak | 7,491 Hz | +2.0 dB | 2.79 |
Neutral target
Set a preamp of -5.4 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 93 out of 100, up from 68.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.9 dB | 0.70 |
| High shelf | 10,000 Hz | -3.7 dB | 0.70 |
| Peak | 23 Hz | +3.3 dB | 3.25 |
| Peak | 62 Hz | -1.6 dB | 1.36 |
| Peak | 3,592 Hz | +5.4 dB | 2.97 |
| Peak | 5,487 Hz | -3.4 dB | 6.00 |
| Peak | 7,491 Hz | +2.0 dB | 2.79 |
Studio flat 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 87 out of 100, up from 35.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -4.8 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 171 Hz | -2.5 dB | 0.52 |
| Peak | 1,972 Hz | +1.9 dB | 5.39 |
| Peak | 3,060 Hz | +6.0 dB | 1.54 |
| Peak | 3,935 Hz | +2.6 dB | 5.94 |
| Peak | 5,518 Hz | -4.6 dB | 6.00 |
Warm target
Set a preamp of -3.7 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 95 out of 100, up from 93.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.0 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 3,643 Hz | +3.9 dB | 3.67 |
| Peak | 5,561 Hz | -5.3 dB | 6.00 |
Bass target
Set a preamp of -5.6 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 94 out of 100, up from 86.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.5 dB | 0.70 |
| High shelf | 10,000 Hz | -3.7 dB | 0.70 |
| Peak | 3,592 Hz | +5.4 dB | 2.97 |
| Peak | 5,487 Hz | -3.4 dB | 6.00 |
| Peak | 7,491 Hz | +2.0 dB | 2.79 |
Bright target
Set a preamp of -6.0 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 average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 73 out of 100, up from 47.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.9 dB | 0.70 |
| Peak | 3,751 Hz | +6.0 dB | 1.82 |
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 the average of 2 independent measurements from squig.link, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 78 out of 100, up from 73.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.9 dB | 0.70 |
| High shelf | 10,000 Hz | +1.1 dB | 0.70 |
| Peak | 3,735 Hz | +6.0 dB | 1.51 |
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Frequency Response
How the Fostex x Massdrop TH-X00 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 average of 2 independent measurements, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.
Measurement data: the average of 2 independent measurements from the squig.link databases of aden and kr0mka. Thanks to each of them for publishing their work.