Short answer: a tie on sound quality. Both are rated 3.3/5 (#904 and #930 of 1291 in-ear headphones) at nearly the same price ($1,999 vs $1,999), so choose on features and fit.
The case for the 64 Audio A12t: 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 catch: 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.
What the Canpur CP54E does well: A broadly balanced tuning with a preference score of 65 against the Harman target. The catch: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the 64 Audio A12t or the Canpur CP54E on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
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.
64 Audio $1,999.00 eBay
A broadly balanced tuning with a preference score of 65 against the Harman target.
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Specifications Side By Side
| 64 Audio A12t | Canpur CP54E | |
|---|---|---|
| Price | $1,999.00 | $1,999 |
| Ranked | #904 of 1291 in In-Ear Headphones | #930 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 65 (measured by crinacle, via AutoEQ) | 65 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.50 dB standard deviation | 2.48 dB standard deviation |
| Tonal Tilt | -0.87 (negative is warmer, positive brighter) | -0.86 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Hybrid (Balanced Armature + Electrostatic) |
| Drivers | 12 x balanced armature (incl. 1 tia high driver) | 9 drivers per side (5 Balanced Armature + 4 Sonion Electrostatic) |
| Impedance | 12.6 ohms | 10 ohms |
| Sensitivity | 108 dB/mW | 100 dB SPL/mW |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 5Hz - 45kHz |
| Built-in Microphone | No | - |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+2.1 dB at 30 Hz) |
| Weight | - | Not specified |
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