Short answer: the KZ PR3. Both are rated 4.2/5 for sound quality (#253 and #224 of 909 in-ear headphones), and the KZ PR3 costs $71.99 against $199.99 for the 7Hz Timeless, so with nothing between them on sound quality, price settles it.
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.
What the KZ PR3 does well: The median of 11 hobbyist measurements gives it a very good Harman preference score of 76 with a 1.93 dB spread. The catch: A 10.4 dB peak near 10.3 kHz can make cymbals and sibilance sound sharp.
Buy the KZ PR3. Both are rated the same for sound quality, and it costs $128 less than the 7Hz Timeless.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| 7Hz Timeless | KZ PR3 | |
|---|---|---|
| Price | $199.99 | $71.99 |
| Ranked | #224 of 909 in In-Ear Headphones | #253 of 909 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 76 (measured by oratory1990, via AutoEQ) | 76 (median of 11 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.94 dB standard deviation | 1.93 dB standard deviation |
| Tonal Tilt | -0.27 (negative is warmer, positive brighter) | +0.26 (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 (+0.2 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Planar |
| Drivers | 1 x 14.2mm planar magnetic | 1 x 13.2mm planar |
| Impedance | 14.8 ohms | 15 ohms |
| Sensitivity | 104 dB @ 1kHz | - |
| Frequency Response | 5Hz - 40kHz (Manufacturer specified) | 20Hz - 40kHz |
| Built-in Microphone | No | - |
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- 7Hz Timeless vs IKKO OH10S
- 7Hz Timeless vs 7Hz Timeless II
Prices on this page were last checked October 13, 2026 at 3:17 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
7Hz Timeless: $199.99 Linsoul $199.99 eBay
Newer model: the 7Hz Timeless II, ranked lower, rated 3.9/5, released Nov 2024. See every 7Hz Timeless generation.
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
KZ PR3: $71.99 Amazon $71.99 eBay
Pros: The median of 11 hobbyist measurements gives it a very good Harman preference score of 76 with a 1.93 dB spread. Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat. It uses 1 x 13.2mm planar with an easy 15 ohm load.
Cons: A 10.4 dB peak near 10.3 kHz can make cymbals and sibilance sound sharp.
Full KZ PR3 review and specifications →
| Released | Nov 2023 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.93 dB standard deviation |
| Driver Type | Planar |
| Drivers | 1 x 13.2mm planar |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz |
| Harman Preference Score | 76 (median of 11 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 15 ohms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.2 dB at 30 Hz) |
| Tonal Tilt | +0.26 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples