Short answer: a tie on sound quality. Both are rated 4.5/5 (#75 and #86 of 450 in-ear headphones) at nearly the same price ($39 vs $39), so choose on features and fit.
The case for the Sivga SM100: Twelve hobbyist measurements on squig.link put its preference score at 79.7, with a near neutral tilt and bass sitting within a fraction of a dB of target from 60 to 200 Hz. The tradeoff: Presence between 3 and 6 kHz sits about 2.9 dB under target with a 4.2 dB dip near 3.8 kHz, which softens guitar bite and vocal articulation.
What the Tin HiFi C2 2025 does well: The median of 15 squig.link measurements gives it a preference score of 79.3 and a smooth 1.39 dB spread, a strong result from a single 10 mm dynamic driver. The tradeoff: A 7.7 dB peak near 11.9 kHz can add a hint of tizz to cymbals and hi-hats.
Buy the Sivga SM100 or the Tin HiFi C2 2025 on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| Sivga SM100 | Tin HiFi C2 2025 | |
|---|---|---|
| Price | $39.00 | $39.00 |
| Ranked | #75 of 450 in In-Ear Headphones | #86 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 80 (median of 13 squig.link measurements, calibrated to AutoEQ) | 79 (median of 15 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.53 dB standard deviation | 1.39 dB standard deviation |
| Tonal Tilt | -0.03 (negative is warmer, positive brighter) | -0.43 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.2 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 32 ohms | 32 ohms |
| Sensitivity | 107 dB | 104 dB @ 0.179V |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 10Hz - 20kHz (Manufacturer specified) |
| Built-in Microphone | Yes | - |
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More worthwhile head-to-heads for Sivga SM100:
- Tin HiFi C2 Mech Warrior vs Sivga SM100
- Sivga SM100 vs Tin HiFi T2 DLC
- Tin HiFi C2 Mech Warrior vs Tin HiFi C2 2025
- Tin HiFi C2 2025 vs Tin HiFi T2 DLC
- Tin HiFi C2 vs Tin HiFi C2 2025
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
Sivga SM100: $39.00 Amazon eBay
Pros: Twelve hobbyist measurements on squig.link put its preference score at 79.7, with a near neutral tilt and bass sitting within a fraction of a dB of target from 60 to 200 Hz. Upper mids run about 0.8 dB forward, so vocals come through clearly, and a modest air lift of 2.7 dB adds a little sheen. The built-in mic and 32 ohm load suit phone calls and everyday listening.
Cons: Presence between 3 and 6 kHz sits about 2.9 dB under target with a 4.2 dB dip near 3.8 kHz, which softens guitar bite and vocal articulation. Sub-bass slips about 1.8 dB below target, so the deepest bass notes are a touch lighter than the bass focused profile it fits best would suggest.
Full Sivga SM100 review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | Yes |
| Connection | Wired |
| Deviation From Target | 1.53 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 80 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 107 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.3 dB at 30 Hz) |
| Tonal Tilt | -0.03 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Tin HiFi C2 2025: $39.00 Amazon eBay
Pros: The median of 15 squig.link measurements gives it a preference score of 79.3 and a smooth 1.39 dB spread, a strong result from a single 10 mm dynamic driver. Bass rises about 2 dB above target between 60 and 200 Hz with sub-bass right on target, giving a warm, punchy low end that suits bass lovers. Its 32 ohm load is easy for phones and dongles.
Cons: A 7.7 dB peak near 11.9 kHz can add a hint of tizz to cymbals and hi-hats. Presence and lower treble each sit about 1.3 dB under target, with a 4.8 dB dip near 6.3 kHz that slightly softens vocal articulation.
Full Tin HiFi C2 2025 review and specifications →
| Released | 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.39 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 79 (median of 15 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 32 ohms |
| Sensitivity | 104 dB @ 0.179V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.2 dB at 30 Hz) |
| Tonal Tilt | -0.43 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons