Short answer: the 7Hz Timeless. It ranks #189 of 450 in-ear headphones by sound quality, rated 4.2/5, at $199.99; the IKKO OH10S ranks #235, rated 4.1/5, at $199. Close enough in price that the sound-quality gap is the deciding factor.
The case for the 7Hz Timeless: 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. The tradeoff: 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 7Hz Timeless. It is rated higher for sound quality, and the $0.99 you would save on the IKKO OH10S does not close the gap.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| 7Hz Timeless | IKKO OH10S | |
|---|---|---|
| Price | $199.99 | $199.00 |
| Ranked | #189 of 450 in In-Ear Headphones | #235 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 76 (measured by oratory1990, via AutoEQ) | 75 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.94 dB standard deviation | 1.71 dB standard deviation |
| Tonal Tilt | -0.27 (negative is warmer, positive brighter) | -0.49 (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 (+1.4 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 14.2mm planar magnetic | 1 x 10mm dynamic + 1 x balanced armature |
| Impedance | 14.8 ohms | 18 ohms |
| Sensitivity | 104 dB @ 1kHz | 106 dB |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | 20Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
Related Headphone Comparisons
How 7Hz Timeless compares with other leading options:
- Apevoix Nebula vs 7Hz Timeless
- 7Hz Timeless vs EPZ P50
- 7Hz Timeless vs Samsung Galaxy Buds Pro
- 7Hz Timeless vs 7Hz Timeless II
- Samsung Galaxy Buds Pro vs IKKO OH10S
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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Headphones In Full
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
IKKO OH10S: $199.00 IKKO eBay
Full IKKO OH10S review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.71 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 75 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 18 ohms |
| Sensitivity | 106 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.4 dB at 30 Hz) |
| Tonal Tilt | -0.49 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons