Short answer: a tie on sound quality. Both are rated 4.2/5 (#200 and #196 of 450 in-ear headphones) at nearly the same price ($59.99 vs $59), so choose on features and fit.
Buy the 7Hz Sonus or the Tin HiFi Dudu 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.
Specifications Side By Side
| 7Hz Sonus | Tin HiFi Dudu | |
|---|---|---|
| Price | $59.99 | $59.00 |
| Ranked | #200 of 450 in In-Ear Headphones | #196 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 76 (median of 25 squig.link measurements, calibrated to AutoEQ) | 76 (median of 18 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.79 dB standard deviation | 1.61 dB standard deviation |
| Tonal Tilt | -0.37 (negative is warmer, positive brighter) | -0.50 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.0 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) | Planar magnetic |
| Drivers | 1 x dynamic + 1 x balanced armature | 1 x 13mm planar magnetic |
| Impedance | 30 ohms | 32 ohms |
| Sensitivity | 109 dB/V | 103 dB |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 10Hz - 20kHz (Manufacturer specified) |
Related Headphone Comparisons
More worthwhile head-to-heads for Tin HiFi Dudu:
- Tin HiFi T3 Plus vs Tin HiFi Dudu
- EPZ K5 vs Tin HiFi Dudu
- Tin HiFi C3 MKII vs Tin HiFi Dudu
- Tin HiFi Dudu vs Tin HiFi C3
- EPZ G20 Pro vs 7Hz Sonus
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
7Hz Sonus: $59.99 Amazon eBay
Full 7Hz Sonus review and specifications →
| Released | Aug 2023 (3 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.79 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 76 (median of 25 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 30 ohms |
| Sensitivity | 109 dB/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) |
| Tonal Tilt | -0.37 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Tin HiFi Dudu: $59.00 Amazon eBay
Full Tin HiFi Dudu review and specifications →
| Released | 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.61 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 13mm planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 76 (median of 18 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 103 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.0 dB at 30 Hz) |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons