Short answer: the Tanchjim Soda. It ranks #31 of 450 in-ear headphones by sound quality, rated 4.7/5, at $309.99. The Binary Chopin ranks #83, rated 4.5/5, at $299.99, $10 cheaper, which does not close the gap in sound quality.
The case for the Tanchjim Soda: Squig.link measurements, the median of 10 hobbyist samples, give it a preference score of 82, with bass within a decibel of target from 20 Hz and a gentle lift around 60 to 200 Hz for warmth. The tradeoff: The 3 to 6 kHz presence band sits nearly 3 dB under target, with a 3.8 dB dip near 5.6 kHz, so vocals and snare attack lose some bite, and the top octave rolls about 2 dB short, trimming airiness.
Buy the Tanchjim Soda. It is rated higher for sound quality, and the $10 you would save on the Binary Chopin does not close the gap.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| Tanchjim Soda | Binary Chopin | |
|---|---|---|
| Price | $309.99 | $299.99 |
| Ranked | #31 of 450 in In-Ear Headphones | #83 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 82 (median of 10 squig.link measurements, calibrated to AutoEQ) | 80 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.32 dB standard deviation | 1.42 dB standard deviation |
| Tonal Tilt | -0.13 (negative is warmer, positive brighter) | -0.35 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.0 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 4 balanced armature) | Hybrid (1 dynamic + 4 balanced armature) |
| Drivers | 1 x 10mm dynamic + 4 x balanced armature | 1 x 8mm dynamic + 4 x balanced armature |
| Impedance | 15.5 ohms | 12 ohms |
| Sensitivity | 120 dB/Vrms | 122 dB/Vrms |
| Frequency Response | 8Hz - 48kHz (Manufacturer specified) | - |
| Built-in Microphone | - | No |
Related Headphone Comparisons
How Tanchjim Soda compares with other leading options:
- EPZ K9 vs Tanchjim Soda
- Moondrop Harmon vs Tanchjim Soda
- Binary Chopin vs Etymotic EVO
- Binary Chopin vs Kiwi Ears Orchestra II
- Binary Chopin vs Rose Technics QT9 MK3
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
Tanchjim Soda: $309.99 Amazon eBay
Pros: Squig.link measurements, the median of 10 hobbyist samples, give it a preference score of 82, with bass within a decibel of target from 20 Hz and a gentle lift around 60 to 200 Hz for warmth. The one dynamic plus four balanced armature hybrid at 120 dB/Vrms needs very little power, so a phone is enough. It suits listeners who like a warm, bass forward balance without exaggeration.
Cons: The 3 to 6 kHz presence band sits nearly 3 dB under target, with a 3.8 dB dip near 5.6 kHz, so vocals and snare attack lose some bite, and the top octave rolls about 2 dB short, trimming airiness. Its average deviation of about 1.3 dB is less even than the higher rated Tin HiFi T7, which sells for less.
Full Tanchjim Soda review and specifications →
| Released | Dec 2025 (10 months ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.32 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 4 balanced armature) |
| Drivers | 1 x 10mm dynamic + 4 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 8Hz - 48kHz (Manufacturer specified) |
| Harman Preference Score | 82 (median of 10 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 15.5 ohms |
| Sensitivity | 120 dB/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.6 dB at 30 Hz) |
| Tonal Tilt | -0.13 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Binary Chopin: $299.99 Hangout Audio eBay
Full Binary Chopin review and specifications →
| Released | Sep 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.42 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 4 balanced armature) |
| Drivers | 1 x 8mm dynamic + 4 x balanced armature |
| Form Factor | In-ear |
| Harman Preference Score | 80 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 12 ohms |
| Sensitivity | 122 dB/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.0 dB at 30 Hz) |
| Tonal Tilt | -0.35 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons