Short answer: the Audeze iSINE 10, if you are buying new, though neither ranks well in its class. The Audeze iSINE 20 measures as well as it (#890 vs #883 of 909 in-ear headphones, 1.0/5 vs 1.0/5) but is discontinued, so only consider it used; the Audeze iSINE 10 is still sold new. Both are rated below 3.0/5 among the 909 in-ear headphones, so if sound quality matters, consider the ThieAudio Monarch MKIII instead, ranked #1 at $999.
The case for the Audeze iSINE 10: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. The tradeoff: Presence sits about 12.5 dB low with a 14.2 dB dip near 3.8 kHz, so vocals and instruments lose some bite.
The case for the Audeze iSINE 20: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. The catch: Discontinued, so it is mainly found used.
Buy the Audeze iSINE 10 if you want one new; the Audeze iSINE 20 is discontinued, so only look for it used.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| Audeze iSINE 10 | Audeze iSINE 20 | |
|---|---|---|
| Price | - | Discontinued |
| Ranked | #883 of 909 in In-Ear Headphones | #890 of 909 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Planar magnetic |
| Drivers | 1 x 30mm planar magnetic | 1 x 30mm planar magnetic |
| Impedance | 16 ohms | 24 ohms |
| Sensitivity | 110 dB/mW | 112 dB/mW |
| Frequency Response | 10Hz - 50kHz | 10Hz - 50kHz |
| Weight | 0 lbs (20 g) | 0 lbs (20 g) (pair) |
| Harman Preference Score | 32 (measured by oratory1990, via AutoEQ) | 29 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 5.33 dB standard deviation | 5.74 dB standard deviation |
| Tonal Tilt | +0.57 (negative is warmer, positive brighter) | +0.32 (negative is warmer, positive brighter) |
| Sub-bass Extension | Falls 6 dB below target at 112 Hz (-11.8 dB at 30 Hz) | Falls 6 dB below target at 112 Hz (-11.8 dB at 30 Hz) |
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Prices on this page were last checked October 13, 2026 at 3:17 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
Audeze iSINE 10 eBay
Pros: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. It uses 1 x 30mm planar magnetic with an easy 16 ohm load.
Cons: Presence sits about 12.5 dB low with a 14.2 dB dip near 3.8 kHz, so vocals and instruments lose some bite. Sub-bass is 11.8 dB short at 30 Hz, so deep bass lacks rumble. A Harman score of 32 places it in the lower part of the in-ear rankings.
Full Audeze iSINE 10 review and specifications →
| Released | Nov 2016 (9 years ago) |
|---|---|
| Connection | Wired |
| Deviation From Target | 5.33 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 30mm planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 50kHz |
| Harman Preference Score | 32 (measured by oratory1990, via AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 110 dB/mW |
| Sub-bass Extension | Falls 6 dB below target at 112 Hz (-11.8 dB at 30 Hz) |
| Tonal Tilt | +0.57 (negative is warmer, positive brighter) |
| Weight | 0 lbs (20 g) |
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 | +6.3 dB | 0.70 |
| Peak | 1,492 Hz | -7.7 dB | 2.39 |
| Peak | 2,987 Hz | +7.9 dB | 0.64 |
| Peak | 962 Hz | -6.0 dB | 1.06 |
| Peak | 320 Hz | -1.6 dB | 0.52 |
| High shelf | 10,000 Hz | -3.6 dB | 0.70 |
| Peak | 5,667 Hz | +2.6 dB | 4.13 |
| Peak | 3,371 Hz | -1.3 dB | 5.04 |
| Peak | 66 Hz | +0.3 dB | 1.85 |
| Peak | 2,397 Hz | +0.6 dB | 4.30 |
- Reviews, Comparisons and Sound Samples
Audeze iSINE 20 Discontinued eBay
Pros: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. It uses 1 x 30mm planar magnetic with an easy 24 ohm load.
Cons: Discontinued, so it is mainly found used. Presence sits about 14 dB low with a 19.8 dB dip near 4.3 kHz, so vocals and instruments lose some bite. Sub-bass is 11.8 dB short at 30 Hz, so deep bass lacks rumble. A Harman score of 29 places it in the lower part of the in-ear rankings.
Full Audeze iSINE 20 review and specifications →
| Released | 2016 (10 years ago) |
|---|---|
| Connection | Wired |
| Deviation From Target | 5.74 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 30mm planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 50kHz |
| Harman Preference Score | 29 (measured by oratory1990, via AutoEQ) |
| Impedance | 24 ohms |
| Sensitivity | 112 dB/mW |
| Sub-bass Extension | Falls 6 dB below target at 112 Hz (-11.8 dB at 30 Hz) |
| Tonal Tilt | +0.32 (negative is warmer, positive brighter) |
| Weight | 0 lbs (20 g) (pair) |
EQ preset to match the Harman target
Set a preamp of -6.6 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 | +6.1 dB | 0.70 |
| Peak | 1,426 Hz | -8.4 dB | 1.13 |
| Peak | 2,502 Hz | +11.4 dB | 1.08 |
| Peak | 1,226 Hz | -3.7 dB | 0.18 |
| Peak | 5,200 Hz | +6.5 dB | 1.31 |
| High shelf | 10,000 Hz | -2.6 dB | 0.70 |
| Peak | 6,359 Hz | +1.3 dB | 3.59 |
| Peak | 157 Hz | -0.4 dB | 1.22 |
| Peak | 372 Hz | +0.4 dB | 1.64 |
| Peak | 5,154 Hz | -0.7 dB | 4.68 |
- Reviews, Comparisons and Sound Samples