Short answer: the qdc Anole V6. It ranks #369 of 450 in-ear headphones by sound quality, rated 3.3/5, at $1,298; the Sennheiser IE 900 ranks #383, rated 3.1/5, and costs $1,299.95, which makes this an easy call rather than a real tradeoff.
The case for the qdc Anole V6: Six balanced armature drivers per side earn a preference score of 65 in crinacle’s measurement with a warm leaning balance. The tradeoff: An average deviation of about 2.9 dB from target makes the tuning uneven, with some bands noticeably louder or quieter than others.
Why pick the Sennheiser IE 900: Oratory1990 measured sub-bass and bass within about 1.2 dB of target, so the low end is tidy and controlled. Watch for: Presence from 3 to 6 kHz is about 6.7 dB below the Harman target, with an 8.8 dB dip near 3.6 kHz, which recesses vocals and removes some bite.
Buy the qdc Anole V6. It is rated higher for sound quality than the Sennheiser IE 900 and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| qdc Anole V6 | Sennheiser IE 900 | |
|---|---|---|
| Price | $1,298.00 | $1,299.95 |
| Ranked | #369 of 450 in In-Ear Headphones | #383 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 65 (measured by crinacle, via AutoEQ) | 63 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.85 dB standard deviation | 2.82 dB standard deviation |
| Tonal Tilt | -0.62 (negative is warmer, positive brighter) | -0.92 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Dynamic |
| Drivers | 6 x balanced armature | 1 x 7mm dynamic |
| Sensitivity | 106 - 109 dB SPL/mW | 123 dB SPL/V |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 5Hz - 48kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
| Sub-bass Extension | - | Within 6 dB of target down to 20 Hz (+0.7 dB at 30 Hz) |
| Impedance | - | 16 ohms |
Related Headphone Comparisons
More worthwhile head-to-heads for qdc Anole V6:
- Unique Melody MEST Mk2 vs qdc Anole V6
- SeeAudio Neo vs qdc Anole V6
- Sennheiser IE 900 vs Westone MACH 80
- Sennheiser IE 900 vs FiiO FH5
- Sennheiser IE 600 vs Sennheiser IE 900
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
qdc Anole V6: $1,298.00 Shenzhenaudio eBay
Pros: Six balanced armature drivers per side earn a preference score of 65 in crinacle’s measurement with a warm leaning balance. It matches the rating of the 64 Audio A12t for considerably less money, and its 106 to 109 dB/mW sensitivity makes it easy to drive from a phone.
Cons: An average deviation of about 2.9 dB from target makes the tuning uneven, with some bands noticeably louder or quieter than others. Better rated in-ears are available for far less money.
Full qdc Anole V6 review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.85 dB standard deviation |
| Driver Type | Balanced armature |
| Drivers | 6 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 65 (measured by crinacle, via AutoEQ) |
| Sensitivity | 106 - 109 dB SPL/mW |
| Tonal Tilt | -0.62 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.0 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 | -0.2 dB | 0.70 |
| Peak | 5,865 Hz | +5.5 dB | 1.25 |
| Peak | 167 Hz | -2.7 dB | 0.91 |
| Peak | 1,494 Hz | -2.8 dB | 1.71 |
| Peak | 761 Hz | +0.9 dB | 1.13 |
| High shelf | 10,000 Hz | -8.1 dB | 0.70 |
| Peak | 9,096 Hz | +3.7 dB | 0.91 |
| Peak | 4,218 Hz | -2.5 dB | 5.80 |
| Peak | 3,087 Hz | +0.7 dB | 3.79 |
| Peak | 6,799 Hz | -3.0 dB | 5.99 |
- Reviews, Comparisons and Sound Samples
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Sennheiser IE 900: $1,299.95 Amazon eBay
Pros: Oratory1990 measured sub-bass and bass within about 1.2 dB of target, so the low end is tidy and controlled. Sensitivity of 123 dB SPL/V and a 16 ohm impedance make it easy to drive from a phone, and the 7mm dynamic driver is rated to reach from 5 Hz to 48 kHz. Top-octave air sits about 3.6 dB above target for an open, detailed treble.
Cons: Presence from 3 to 6 kHz is about 6.7 dB below the Harman target, with an 8.8 dB dip near 3.6 kHz, which recesses vocals and removes some bite. A preference score of 63 is modest for such a premium product, and the HIFIMAN RE2000 has a higher rating at a lower price.
Full Sennheiser IE 900 review and specifications →
| Released | 2021 (5 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 2.82 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 7mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 48kHz (Manufacturer specified) |
| Harman Preference Score | 63 (measured by oratory1990, via AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 123 dB SPL/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.7 dB at 30 Hz) |
| Tonal Tilt | -0.92 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.3 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 | -2.3 dB | 0.70 |
| Peak | 4,081 Hz | +5.0 dB | 2.86 |
| Peak | 204 Hz | -2.6 dB | 1.13 |
| Peak | 1,472 Hz | -2.7 dB | 2.33 |
| Peak | 2,956 Hz | +5.2 dB | 2.42 |
| High shelf | 10,000 Hz | -4.4 dB | 0.70 |
| Peak | 67 Hz | +0.6 dB | 1.76 |
| Peak | 26 Hz | -0.9 dB | 3.19 |
| Peak | 729 Hz | +0.4 dB | 2.54 |
| Peak | 376 Hz | -0.4 dB | 2.69 |
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