Short answer: the EPZ P40. It ranks #8 of 450 in-ear headphones by sound quality, rated 4.9/5, at $159.99; the Simgot SuperMix 4 ranks #18, rated 4.8/5, and costs $169.99, so there is little reason to consider the other one.
What the EPZ P40 does well: The median of 14 hobbyist measurements gives it a preference score of 86, with only about 0.9 dB of average deviation from the Harman target, so tonal balance is close to what most listeners prefer. The catch: The 10 to 16 kHz air region measures about 6 dB above target, with a peak of roughly 5 dB near 11.9 kHz, so cymbals and breath noise can sound a little crisp and sparkly.
What the Simgot SuperMix 4 does well: Across 48 hobbyist measurements on squig.link it scores 83 for preference, with an average deviation of only about 1 dB, so the overall balance is even and easy to like. The tradeoff: A roughly 3 dB dip near 6.5 kHz and a presence region about 2 dB under target make vocals and guitar attack a touch recessed, while a 5.7 dB peak near 11.9 kHz adds a hint of glare up top.
Buy the EPZ P40. It is rated higher for sound quality than the Simgot SuperMix 4 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| EPZ P40 | Simgot SuperMix 4 | |
|---|---|---|
| Price | $159.99 | $169.99 |
| Ranked | #8 of 450 in In-Ear Headphones | #18 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 86 (median of 14 squig.link measurements, calibrated to AutoEQ) | 84 (median of 48 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 0.93 dB standard deviation | 1.00 dB standard deviation |
| Tonal Tilt | +0.14 (negative is warmer, positive brighter) | -0.39 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.8 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.4 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 1 planar magnetic + 1 piezoelectric) | Hybrid (1 dynamic + 1 balanced armature + 1 planar magnetic + 1 piezoelectric) |
| Drivers | 1 x 9mm dynamic + 1 x 7mm dynamic + 1 x micro planar + 1 x piezoelectric | 1 x 10mm dynamic + 1 x balanced armature + 1 x planar magnetic + 1 x piezoelectric |
| Impedance | 14 ohms | 7.2 ohms |
| Sensitivity | 100 dB | 120 dB/Vrms |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 8Hz - 40kHz (Manufacturer specified) |
Related Headphone Comparisons
How EPZ P40 compares with other leading options:
- EPZ P40 vs Truthear Nova
- EPZ P40 vs TANGZU x AZLA Noir Blanc
- Simgot SuperMix 4 vs SeeAudio Yume
- Truthear Nova vs Simgot SuperMix 4
- Simgot EW100P vs Simgot SuperMix 4
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
EPZ P40: $159.99 Amazon eBay
Pros: The median of 14 hobbyist measurements gives it a preference score of 86, with only about 0.9 dB of average deviation from the Harman target, so tonal balance is close to what most listeners prefer. Bass sits within a decibel of target from 20 Hz upward, which keeps kick drums full without bloating vocals. A four driver hybrid setup (two dynamic, one planar and one piezoelectric) at 14 ohms runs easily from a phone dongle. It is rated above the Juzear 81T and Simgot EA500LM at a similar price.
Cons: The 10 to 16 kHz air region measures about 6 dB above target, with a peak of roughly 5 dB near 11.9 kHz, so cymbals and breath noise can sound a little crisp and sparkly. The EPZ Q5 shares its rating for less money, and a small dip near 3.7 kHz slightly softens vocal presence.
Full EPZ P40 review and specifications →
| Released | Jan 2026 (9 months ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 0.93 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 1 planar magnetic + 1 piezoelectric) |
| Drivers | 1 x 9mm dynamic + 1 x 7mm dynamic + 1 x micro planar + 1 x piezoelectric |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 86 (median of 14 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 14 ohms |
| Sensitivity | 100 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.8 dB at 30 Hz) |
| Tonal Tilt | +0.14 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Simgot SuperMix 4: $169.99 Amazon eBay
Pros: Across 48 hobbyist measurements on squig.link it scores 83 for preference, with an average deviation of only about 1 dB, so the overall balance is even and easy to like. Sub-bass sits about 1 dB above target down to 20 Hz, giving warm, full low end that suits bass and warm listeners. The 7.2 ohm, 120 dB/Vrms hybrid of dynamic, balanced armature, planar and piezoelectric drivers gets loud from any phone or dongle.
Cons: A roughly 3 dB dip near 6.5 kHz and a presence region about 2 dB under target make vocals and guitar attack a touch recessed, while a 5.7 dB peak near 11.9 kHz adds a hint of glare up top. Its rating sits below the EPZ P40 at a similar price, and its very low impedance can pick up hiss from noisy sources.
Full Simgot SuperMix 4 review and specifications →
| Released | May 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.00 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature + 1 planar magnetic + 1 piezoelectric) |
| Drivers | 1 x 10mm dynamic + 1 x balanced armature + 1 x planar magnetic + 1 x piezoelectric |
| Form Factor | In-ear |
| Frequency Response | 8Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 84 (median of 48 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 7.2 ohms |
| Sensitivity | 120 dB/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.4 dB at 30 Hz) |
| Tonal Tilt | -0.39 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons