Short answer: the 64 Audio Tia Trio. It ranks #919 of 1369 in-ear headphones by sound quality, rated 3.3/5, at $2,299; the Penon Impact ranks #995, rated 3.2/5, and costs $2,499, so there is little reason to consider the other one.
What the 64 Audio Tia Trio does well: A single dynamic driver and two balanced armatures give near-neutral sub-bass down to 20 Hz and about 1.8 dB of extra bass for warmth and weight. The catch: In squig.link measurements the 3 to 6 kHz presence band sits about 4.7 dB below target with a 6.6 dB dip near 5.5 kHz, so vocals and strings can sound recessed.
What the Penon Impact does well: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap. The tradeoff: Treble about 5 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the 64 Audio Tia Trio. It is rated higher for sound quality than the Penon Impact and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Headphones rankings cover every ranked option.
A single dynamic driver and two balanced armatures give near-neutral sub-bass down to 20 Hz and about 1.8 dB of extra bass for warmth and weight.
64 Audio $2,299.00 eBay
A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
Penon Audio $2,499.00 eBayPrices on this page were last checked October 17, 2026 at 6:04 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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Specifications Side By Side
| 64 Audio Tia Trio | Penon Impact | |
|---|---|---|
| Price | $2,299.00 | $2,499.00 |
| Ranked | #919 of 1369 in In-Ear Headphones | #995 of 1369 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 65 (measured by crinacle, via AutoEQ) | 64 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.59 dB standard deviation | 2.87 dB standard deviation |
| Tonal Tilt | -0.76 (negative is warmer, positive brighter) | -0.56 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 2 balanced armature) | Hybrid |
| Drivers | 1 x dynamic + 2 x balanced armature | 14 drivers (10 balanced armatures + 4 electrostatic drivers) |
| Impedance | 5.5 ohms | 21 ohms |
| Sensitivity | 104 dB/mW | 112 dB |
| Frequency Response | 5Hz - 22kHz (Manufacturer specified) | 10Hz - 70kHz |
| Built-in Microphone | No | - |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.9 dB at 30 Hz) |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the 64 Audio Tia Trio from aftersound, animagus, boizoff, hbb, kazi, precog, pw, recode and therollo9; the Penon Impact from ducbloke, eliseaudio, tgx78 and tonedeafmonk, all via squig.link.
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