Short answer: the 64 Audio U12t. It ranks #381 of 450 in-ear headphones by sound quality, rated 3.2/5, at $1,999; the HIFIMAN RE2000 Pro ranks #385, rated 3.1/5, and costs $2,000, so there is little reason to consider the other one.
What the 64 Audio U12t does well: Twelve balanced armatures produce a warm, smooth tuning with sub-bass right on target down to 20 Hz and about 1.6 dB of extra bass for body. The catch: Presence sits about 5.7 dB below target from 3 to 6 kHz, with a 7.9 dB dip near 3.3 kHz, so vocals and guitars sound distant and detail is subdued.
Why pick the HIFIMAN RE2000 Pro: A single dynamic driver in-ear with a preference score of 63 in crinacle’s measurement, close to the similarly priced 64 Audio U18S in rating. The tradeoff: Its response deviates about 2.9 dB from target on average, so its tuning is noticeably uneven for the money.
Buy the 64 Audio U12t. It is rated higher for sound quality than the HIFIMAN RE2000 Pro and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| 64 Audio U12t | HIFIMAN RE2000 Pro | |
|---|---|---|
| Price | $1,999.00 | $2,000.00 |
| Ranked | #381 of 450 in In-Ear Headphones | #385 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 64 (measured by crinacle, via AutoEQ) | 63 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.67 dB standard deviation | 2.90 dB standard deviation |
| Tonal Tilt | -0.86 (negative is warmer, positive brighter) | -0.49 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Dynamic |
| Drivers | 12 x balanced armature | - |
| Impedance | 12.6 ohms | 60 ohms |
| Sensitivity | 108 dB/mW | 103 dB |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 5Hz - 20kHz (Manufacturer specified) |
| Built-in Microphone | No | No |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.4 dB at 30 Hz) | - |
Related Headphone Comparisons
More top alternatives to 64 Audio U12t:
- 64 Audio Tia Trio vs 64 Audio U12t
- 64 Audio A12t vs 64 Audio U12t
- 64 Audio U12t vs SoftEars Cerberus
- 64 Audio U12t vs Fir Audio e12
- 64 Audio A12t vs HIFIMAN RE2000 Pro
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
64 Audio U12t: $1,999.00 64 Audio eBay
Pros: Twelve balanced armatures produce a warm, smooth tuning with sub-bass right on target down to 20 Hz and about 1.6 dB of extra bass for body. In the median of 22 hobbyist measurements on squig.link, the treble never rises more than a fraction of a decibel above target between 1.5 and 12 kHz, so there is no harshness or sibilance at any volume. At 108 dB/mW it plays loud from a phone. It matches the rating of the SoftEars Cerberus for less money.
Cons: Presence sits about 5.7 dB below target from 3 to 6 kHz, with a 7.9 dB dip near 3.3 kHz, so vocals and guitars sound distant and detail is subdued. The 64 Audio A12t from the same maker rates higher at the same price, and the Fir Audio e12 matches its rating for less.
Full 64 Audio U12t review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.67 dB standard deviation |
| Driver Type | Balanced armature |
| Drivers | 12 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 64 (measured by crinacle, via AutoEQ) |
| Impedance | 12.6 ohms |
| Sensitivity | 108 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.4 dB at 30 Hz) |
| Tonal Tilt | -0.86 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -5.3 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 | -0.4 dB | 0.70 |
| Peak | 191 Hz | -2.3 dB | 0.44 |
| Peak | 8,941 Hz | +5.5 dB | 1.20 |
| Peak | 3,118 Hz | +5.7 dB | 2.53 |
| Peak | 2,054 Hz | -3.1 dB | 2.08 |
| High shelf | 10,000 Hz | -6.7 dB | 0.70 |
| Peak | 5,678 Hz | +3.0 dB | 5.76 |
| Peak | 4,885 Hz | -1.9 dB | 6.00 |
| Peak | 314 Hz | +0.4 dB | 3.39 |
| Peak | 540 Hz | -0.4 dB | 2.46 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
HIFIMAN RE2000 Pro: $2,000.00 HIFIMAN eBay
Pros: A single dynamic driver in-ear with a preference score of 63 in crinacle’s measurement, close to the similarly priced 64 Audio U18S in rating. The closed design isolates well from outside noise.
Cons: Its response deviates about 2.9 dB from target on average, so its tuning is noticeably uneven for the money. The Sennheiser IE 900 earns the same rating at a lower price.
Full HIFIMAN RE2000 Pro review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.90 dB standard deviation |
| Driver Type | Dynamic |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 63 (measured by crinacle, via AutoEQ) |
| Impedance | 60 ohms |
| Sensitivity | 103 dB |
| Tonal Tilt | -0.49 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -5.4 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 | +1.5 dB | 0.70 |
| Peak | 167 Hz | -5.0 dB | 0.52 |
| Peak | 877 Hz | +5.7 dB | 1.19 |
| Peak | 5,770 Hz | +4.5 dB | 1.11 |
| Peak | 4,718 Hz | -7.7 dB | 3.53 |
| High shelf | 10,000 Hz | -3.7 dB | 0.70 |
| Peak | 9,705 Hz | +2.4 dB | 2.87 |
| Peak | 2,076 Hz | +1.4 dB | 3.20 |
| Peak | 1,366 Hz | -1.9 dB | 3.84 |
| Peak | 1,069 Hz | +1.2 dB | 4.83 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons