Short answer: the 64 Audio A12t. It ranks #374 of 450 in-ear headphones by sound quality, rated 3.3/5, at $1,999; the HIFIMAN RE2000 Pro ranks #385, rated 3.1/5, and costs $2,000, so there is not much of a tradeoff to weigh.
What the 64 Audio A12t does well: Bass is on target down to 20 Hz with a slight 1.9 dB lift from 60 to 200 Hz, so low end feels full and solid without boom. The tradeoff: In the two hobbyist measurements on squig.link, treble from 6 to 10 kHz sits about 10 dB below target with a 13.7 dB dip near 8.7 kHz, and presence is 7.3 dB low, so cymbals, strings and vocal clarity sound noticeably dark and muffled.
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 A12t. 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.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| 64 Audio A12t | HIFIMAN RE2000 Pro | |
|---|---|---|
| Price | $1,999.00 | $2,000.00 |
| Ranked | #374 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 | 65 (measured by crinacle, via AutoEQ) | 63 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.50 dB standard deviation | 2.90 dB standard deviation |
| Tonal Tilt | -0.87 (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 (incl. 1 tia high driver) | - |
| 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 (+0.2 dB at 30 Hz) | - |
Related Headphone Comparisons
How 64 Audio A12t compares with other leading options:
- 64 Audio A12t vs 64 Audio Tia Trio
- 64 Audio A12t vs SoftEars Cerberus
- 64 Audio A12t vs Fir Audio e12
- 64 Audio A12t vs 64 Audio U12t
- 64 Audio U12t 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 A12t: $1,999.00 64 Audio eBay
Pros: Bass is on target down to 20 Hz with a slight 1.9 dB lift from 60 to 200 Hz, so low end feels full and solid without boom. That warm balance suits listeners who prefer a relaxed, bass rich sound for long sessions. At 12.6 ohms and 108 dB/mW it runs easily from a phone.
Cons: In the two hobbyist measurements on squig.link, treble from 6 to 10 kHz sits about 10 dB below target with a 13.7 dB dip near 8.7 kHz, and presence is 7.3 dB low, so cymbals, strings and vocal clarity sound noticeably dark and muffled. The qdc Anole V6 earns the same rating for considerably less.
Full 64 Audio A12t review and specifications →
| Released | Mar 2018 (8 years ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.50 dB standard deviation |
| Driver Type | Balanced armature |
| Drivers | 12 x balanced armature (incl. 1 tia high driver) |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 65 (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 (+0.2 dB at 30 Hz) |
| Tonal Tilt | -0.87 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -4.8 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 | -0.9 dB | 0.70 |
| Peak | 206 Hz | -2.2 dB | 0.47 |
| Peak | 9,038 Hz | +5.2 dB | 1.59 |
| Peak | 3,244 Hz | +5.1 dB | 2.01 |
| Peak | 2,134 Hz | -2.6 dB | 2.47 |
| High shelf | 10,000 Hz | -6.1 dB | 0.70 |
| Peak | 5,789 Hz | +2.4 dB | 5.93 |
| Peak | 599 Hz | -0.7 dB | 2.55 |
| Peak | 951 Hz | +0.8 dB | 3.06 |
| Peak | 5,061 Hz | -1.6 dB | 6.00 |
- 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