Short answer: the Vision Ears EXT MK II. It ranks #500 of 1253 in-ear headphones by sound quality (rated 3.9/5) at $3,350 and is still sold new; the Vision Ears EXT ranks #868 (rated 3.4/5) and is discontinued, so it is only an option used.
The Vision Ears EXT MK II is the better-sounding choice. A broadly balanced tuning with a preference score of 73 against the Harman target. The tradeoff: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
The case for the Vision Ears EXT: Bass is lifted about 3 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. The catch: Discontinued, so it is mainly found used.
Buy the Vision Ears EXT MK II. It is rated higher for sound quality, and the Vision Ears EXT is discontinued, so it is only available used.
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A broadly balanced tuning with a preference score of 73 against the Harman target.
Vision Ears $3,350 eBay
Bass is lifted about 3 dB with extension to 20 Hz, giving kick drums and bass lines extra weight.
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Specifications Side By Side
| Vision Ears EXT MK II | Vision Ears EXT | |
|---|---|---|
| Price | $3,350 | $2,960 Discontinued |
| Ranked | #500 of 1253 in In-Ear Headphones | #868 of 1253 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | - |
| Harman Preference Score | 73 (median of 4 squig.link measurements, calibrated to AutoEQ) | 66 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.04 dB standard deviation | 2.47 dB standard deviation |
| Tonal Tilt | -0.34 (negative is warmer, positive brighter) | -0.84 (negative is warmer, positive brighter) |
| 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 (+0.5 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 4 electrostatic) | Hybrid |
| Drivers | 1 x 9.2mm dynamic + 1 x 6mm dynamic + 4 x electrostatic | 2 x dynamic + 4 x electrostatic |
| Impedance | - | 10 ohms |
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 Vision Ears EXT MK II from faxepremium, kazi, silicagel and tonedeafmonk; the Vision Ears EXT from aden, aftersound, bloomaudio, nymz and tgx78, all via squig.link.
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