The FatFreq Grand Maestro ranks #46 out of 1448 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Fatfreq
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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#46 FatFreq Grand Maestro: $2871 Bloom Audio $2871 eBay
Pros: A flagship tribrid with one dynamic driver, eight balanced armatures and four electrostatic drivers per side, with a preference score of 83 and a low 1.42 dB deviation from target. Sub bass through the 1 to 2 kHz range stays within about 1 dB of target, so the tonal balance is natural and full.
Cons: Presence and treble from 2 to 8 kHz sit about 2 dB low with a 5.3 dB dip near 5.6 kHz, so detail is slightly softened. At $2871 it costs far more than the ThieAudio Monarch MKIII, which scores higher, and the score rests on a single measurement.
Is the FatFreq Grand Maestro right for you?
Buy it if
- you want the tuning most listeners prefer in blind tests out of the box (Harman score 83).
- you are sensitive to bright or sharp treble (treble sits 2.3 dB below target).
- you want sub-bass rumble that reaches down to 20 Hz.
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.42 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 8 balanced armature + 4 electrostatic) |
| Drivers | 1 x dynamic + 8 x balanced armature + 4 x electrostatic |
| Form Factor | In-ear |
| Harman Preference Score | 83 (1 squig.link measurement, calibrated to AutoEQ) |
| Impedance | 38 ohms |
| Sensitivity | 106 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.8 dB at 30 Hz) |
| Tonal Tilt | -0.16 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -5.2 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 Harman match with this EQ: 90 out of 100, up from 83.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.1 dB | 0.70 |
| High shelf | 10,000 Hz | -4.2 dB | 0.70 |
| Peak | 1,304 Hz | -1.2 dB | 4.82 |
| Peak | 3,306 Hz | +1.2 dB | 5.47 |
| Peak | 5,149 Hz | +5.4 dB | 1.82 |
| Peak | 7,534 Hz | -1.8 dB | 6.00 |
Neutral target
Set a preamp of -5.2 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 Neutral match with this EQ: 90 out of 100, up from 48.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.4 dB | 0.70 |
| High shelf | 10,000 Hz | -4.1 dB | 0.70 |
| Peak | 31 Hz | -0.5 dB | 0.40 |
| Peak | 1,304 Hz | -1.2 dB | 4.85 |
| Peak | 3,306 Hz | +1.2 dB | 5.45 |
| Peak | 5,147 Hz | +5.4 dB | 1.82 |
| Peak | 7,535 Hz | -1.8 dB | 6.00 |
Studio flat 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 a single measurement from squig.link, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 91 out of 100, up from 30.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -10.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.1 dB | 0.70 |
| Peak | 28 Hz | -1.0 dB | 2.54 |
| Peak | 173 Hz | -1.7 dB | 0.61 |
| Peak | 1,322 Hz | -1.5 dB | 3.44 |
| Peak | 2,643 Hz | +1.8 dB | 2.79 |
| Peak | 5,016 Hz | +3.1 dB | 0.56 |
| Peak | 7,446 Hz | -3.4 dB | 6.00 |
Warm target
Set a preamp of -3.6 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 Warm match with this EQ: 92 out of 100, up from 84.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +1.4 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 1,381 Hz | -1.2 dB | 4.52 |
| Peak | 5,345 Hz | +4.0 dB | 3.85 |
| Peak | 7,558 Hz | -3.1 dB | 6.00 |
Bass target
Set a preamp of -5.2 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 Bass match with this EQ: 91 out of 100, up from 72.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.9 dB | 0.70 |
| High shelf | 10,000 Hz | -4.2 dB | 0.70 |
| Peak | 1,304 Hz | -1.2 dB | 4.81 |
| Peak | 3,307 Hz | +1.2 dB | 5.47 |
| Peak | 5,150 Hz | +5.4 dB | 1.82 |
| Peak | 7,534 Hz | -1.8 dB | 6.00 |
Bright 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 Bright match with this EQ: 86 out of 100, up from 37.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.5 dB | 0.70 |
| High shelf | 10,000 Hz | -0.7 dB | 0.70 |
| Peak | 31 Hz | -0.4 dB | 0.40 |
| Peak | 1,321 Hz | -1.4 dB | 3.81 |
| Peak | 3,519 Hz | +1.3 dB | 3.93 |
| Peak | 5,345 Hz | +5.9 dB | 1.13 |
| Peak | 6,887 Hz | -2.5 dB | 5.65 |
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: 82 out of 100, up from 68.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.6 dB | 0.70 |
| High shelf | 10,000 Hz | +0.5 dB | 0.70 |
| Peak | 4,613 Hz | +6.0 dB | 1.15 |
- Links
- Reviews, Comparisons and Sound Samples
Frequency Response
How the FatFreq Grand Maestro measures across the audible range, against the Harman in-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 hbb. Thanks to them for publishing their work.