Short answer: a tie on sound quality. Both are rated 4.4/5 (#99 and #90 of 450 in-ear headphones) at nearly the same price ($129 vs $129.95), so choose on features and fit.
What the Kefine Quatio does well: In the median of 13 squig.link measurements it scores 78.8 with a smooth 1.38 dB spread and no treble peak above 1.5 dB, so cymbals and sibilance never turn harsh. Watch for: A 4 dB dip near 3.6 kHz and presence about 2.5 dB under target push vocals slightly back and soften attack.
The case for the Sennheiser IE 200: Bass and midrange land almost exactly on the Harman target in oratory1990’s measurement, within about 0.5 dB from 60 Hz to 3 kHz, which gives a natural tonal balance and a preference score of 79. The catch: The presence region from 3 to 6 kHz sits about 5 dB under target, with a 5.7 dB dip near 4.4 kHz, so vocals and snare attacks sound a little recessed.
Buy the Kefine Quatio or the Sennheiser IE 200 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
| Kefine Quatio | Sennheiser IE 200 | |
|---|---|---|
| Price | $129.00 | $129.95 |
| Ranked | #99 of 450 in In-Ear Headphones | #90 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 79 (median of 13 squig.link measurements, calibrated to AutoEQ) | 79 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 1.38 dB standard deviation | 1.86 dB standard deviation |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) | -0.02 (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 (-1.8 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature) | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic + 2 x balanced armature | 1 x 7mm dynamic |
| Impedance | 32 ohms | 16 ohms |
| Sensitivity | 107 dB | 119 dB SPL/V |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 6Hz - 20kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
| Weight | - | 0 lbs (4 g) per earphone |
Related Headphone Comparisons
More worthwhile head-to-heads for Sennheiser IE 200:
- Sennheiser IE 200 vs Truthear x Crinacle Zero
- Moondrop Variations vs Sennheiser IE 200
- Moondrop Starfield 2 vs Sennheiser IE 200
- Queen of Audio Ryusei vs Sennheiser IE 200
- Sennheiser IE 200 vs Sony WF-1000XM5
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
Kefine Quatio: $129.00 Amazon eBay
Pros: In the median of 13 squig.link measurements it scores 78.8 with a smooth 1.38 dB spread and no treble peak above 1.5 dB, so cymbals and sibilance never turn harsh. Bass rises about 1.8 dB above target with full extension to 20 Hz, giving a warm, full low end that suits bass lovers. Its 32 ohm, 107 dB load is easy to drive from a phone.
Cons: A 4 dB dip near 3.6 kHz and presence about 2.5 dB under target push vocals slightly back and soften attack. The air band runs 1.3 dB low, so it sounds less airy and spacious than brighter rivals, and the equally rated 7Hz Salnotes Dioko costs less.
Full Kefine Quatio review and specifications →
| Released | Jul 2025 (1 year ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.38 dB standard deviation |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic + 2 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 79 (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 (+0.6 dB at 30 Hz) |
| Tonal Tilt | -0.50 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Sennheiser IE 200: $129.95 Amazon eBay
Pros: Bass and midrange land almost exactly on the Harman target in oratory1990’s measurement, within about 0.5 dB from 60 Hz to 3 kHz, which gives a natural tonal balance and a preference score of 79. At 16 ohms and 119 dB SPL/V sensitivity it plays loud straight from a phone with no amp. Each earpiece weighs only 4 g, and the single 7mm dynamic driver is a simple, wired design with no battery to charge.
Cons: The presence region from 3 to 6 kHz sits about 5 dB under target, with a 5.7 dB dip near 4.4 kHz, so vocals and snare attacks sound a little recessed. The top octave runs about 5.8 dB hot, which adds sparkle that can read as thin or bright on some recordings. The Final Audio A4000 and Shuoer S12 carry higher ratings at lower prices.
Full Sennheiser IE 200 review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.86 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 7mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 6Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 79 (measured by oratory1990, via AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 119 dB SPL/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.8 dB at 30 Hz) |
| Tonal Tilt | -0.02 (negative is warmer, positive brighter) |
| Weight | 0 lbs (4 g) per earphone |
EQ preset to match the Harman target
Set a preamp of -4.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.3 dB | 0.70 |
| Peak | 4,135 Hz | +4.3 dB | 1.83 |
| Peak | 1,520 Hz | -1.9 dB | 1.99 |
| Peak | 180 Hz | -1.2 dB | 1.14 |
| Peak | 67 Hz | +1.0 dB | 1.34 |
| High shelf | 10,000 Hz | -6.1 dB | 0.70 |
| Peak | 727 Hz | +0.8 dB | 1.79 |
| Peak | 5,480 Hz | +1.2 dB | 3.96 |
| Peak | 1,154 Hz | -0.6 dB | 3.44 |
| Peak | 2,978 Hz | +0.4 dB | 3.96 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Sennheiser IE 200 vs Truthear x Crinacle Zero
- Sennheiser IE 200 vs Moondrop Variations
- Sennheiser IE 200 vs Moondrop Starfield 2
- Sennheiser IE 200 vs Queen of Audio Ryusei
- Sennheiser IE 200 vs Sony WF-1000XM5
- Sennheiser IE 200 vs Tanchjim Fission
- Sennheiser IE 200 vs Sennheiser IE 600
- Sennheiser IE 200 vs Sennheiser IE 900
- See all 9 comparisons