Short answer: the ThieAudio Prestige. Both are rated 3.6/5 for sound quality (#736 and #719 of 1291 in-ear headphones), and the ThieAudio Prestige costs $1,299 against $1,399 for the 64 Audio Solo, with sound quality a draw, the lower price decides it.
Why pick the 64 Audio Solo: The single 14.2mm planar driver reaches full depth, sitting within 0.3 dB of target from 20 to 60 Hz on the median of nine squig.link measurements, so bass notes keep their weight without being pumped up. The tradeoff: A dip of 6.4 dB near 3.5 kHz pulls the presence region 5.5 dB below target, so vocals and guitars sound distant and lack bite.
The case for the ThieAudio Prestige: A tribrid flagship with four electrostatic tweeters, four balanced armatures and a dynamic driver. Watch for: Very expensive for its rating, and a low 95 dB sensitivity needs more volume.
Buy the ThieAudio Prestige. Both are rated the same for sound quality, and it costs $100 less than the 64 Audio Solo.
Still deciding? The full Headphones rankings cover every ranked option.
The single 14.2mm planar driver reaches full depth, sitting within 0.3 dB of target from 20 to 60 Hz on the median of nine squig.link measurements, so bass notes keep their weight without being pumped up.
Headphones.com $1,399.00 eBay
A tribrid flagship with four electrostatic tweeters, four balanced armatures and a dynamic driver.
Linsoul $1,299.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 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 Solo | ThieAudio Prestige | |
|---|---|---|
| Price | $1,399.00 | $1,299.00 |
| Ranked | #719 of 1291 in In-Ear Headphones | #736 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 69 (median of 9 squig.link measurements, calibrated to AutoEQ) | 69 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.29 dB standard deviation | 2.10 dB standard deviation |
| Tonal Tilt | -0.64 (negative is warmer, positive brighter) | -0.79 (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 (-0.2 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Tribrid |
| Drivers | 1 x 14.2mm planar magnetic | 1 x dynamic + 4 x balanced armature + 4 x electrostatic |
| Impedance | 12 ohms | 11 ohms |
| Sensitivity | 100 dB @ 1kHz | 95 dB @1kHz |
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 Solo from bloomaudio, elrics, hbb, jaytiss, precog, superreview, theaudiostore, treblewellxtended and vsg; the ThieAudio Prestige from atechreviews, bloomaudio, eliseaudio, hbb, precog, seanwee, sl0the, timmyv and vsg, all via squig.link.
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