Short answer: the Apevoix Nebula. It ranks #170 of 450 in-ear headphones by sound quality, rated 4.3/5, at $199.20; the 7Hz Timeless ranks #189, rated 4.2/5, and costs $199.99, so there is little reason to consider the other one.
What the 7Hz Timeless does well: In oratory1990’s measurement it earns a preference score of 76 with a low 1.9 dB deviation from target, so the overall balance stays close to what most listeners prefer. Watch for: A peak of about 8 dB near 11.9 kHz puts the air region almost 8 dB above target, which adds sparkle that some listeners will find splashy or fatiguing on bright recordings.
Buy the Apevoix Nebula. It is rated higher for sound quality than the 7Hz Timeless and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| Apevoix Nebula | 7Hz Timeless | |
|---|---|---|
| Price | $199.20 | $199.99 |
| Ranked | #170 of 450 in In-Ear Headphones | #189 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 77 (median of 4 squig.link measurements, calibrated to AutoEQ) | 76 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 1.54 dB standard deviation | 1.94 dB standard deviation |
| Tonal Tilt | -0.49 (negative is warmer, positive brighter) | -0.27 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.3 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 8 balanced armature) | Planar magnetic |
| Drivers | 1 x dynamic + 8 x balanced armature | 1 x 14.2mm planar magnetic |
| Impedance | 21 ohms | 14.8 ohms |
| Sensitivity | 101 dB/mW | 104 dB @ 1kHz |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 5Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | - | No |
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Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Headphones In Full
Apevoix Nebula: $199.20 Linsoul eBay
Full Apevoix Nebula review and specifications →
| Released | Apr 2026 (6 months ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.54 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 8 balanced armature) |
| Drivers | 1 x dynamic + 8 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 77 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 21 ohms |
| Sensitivity | 101 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.3 dB at 30 Hz) |
| Tonal Tilt | -0.49 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
7Hz Timeless: $199.99 Linsoul eBay
Pros: In oratory1990’s measurement it earns a preference score of 76 with a low 1.9 dB deviation from target, so the overall balance stays close to what most listeners prefer. Sub-bass holds almost exactly on target down to 20 Hz, sitting only 0.3 dB low at 30 Hz, and the bass gets a mild 1.8 dB lift that adds warmth without muddying the mids. The 14.2mm planar driver is rated at 14.8 ohms and 104 dB, so a phone or small dongle drives it comfortably.
Cons: A peak of about 8 dB near 11.9 kHz puts the air region almost 8 dB above target, which adds sparkle that some listeners will find splashy or fatiguing on bright recordings. The presence band sits 3.6 dB low with a 5 dB dip near 4.2 kHz, so vocals and guitars can lose a little bite and edge.
Full 7Hz Timeless review and specifications →
| Released | 2021 (5 years ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.94 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 14.2mm planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 76 (measured by oratory1990, via AutoEQ) |
| Impedance | 14.8 ohms |
| Sensitivity | 104 dB @ 1kHz |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.3 dB at 30 Hz) |
| Tonal Tilt | -0.27 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -3.9 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.1 dB | 0.70 |
| Peak | 4,515 Hz | +4.0 dB | 1.92 |
| Peak | 164 Hz | -2.2 dB | 0.87 |
| Peak | 670 Hz | +1.8 dB | 1.01 |
| Peak | 1,958 Hz | -1.9 dB | 1.89 |
| High shelf | 10,000 Hz | -7.3 dB | 0.70 |
| Peak | 6,184 Hz | +2.3 dB | 4.39 |
| Peak | 34 Hz | -0.2 dB | 2.05 |
| Peak | 63 Hz | +0.2 dB | 2.01 |
| Peak | 3,040 Hz | +0.5 dB | 5.97 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons