Short answer: the ISN H60. Both are rated 3.9/5 for sound quality (#542 and #475 of 1291 in-ear headphones), and the ISN H60 costs $349 against $369 for the Linsoul Avant, and with sound quality even, the cheaper one is the better buy.
What the ISN H60 does well: A broadly balanced tuning with a preference score of 72 against the Harman target. The tradeoff: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
What the Linsoul Avant does well: The median of 6 hobbyist measurements gives it a solid Harman preference score of 73 with a 1.80 dB spread. The tradeoff: Presence sits about 4.3 dB low with a 5.2 dB dip near 4.1 kHz, so vocals and instruments lose some bite.
Buy the ISN H60. Both are rated the same for sound quality, and it costs $20 less than the Linsoul Avant.
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A broadly balanced tuning with a preference score of 72 against the Harman target.
Amazon $349.00 eBay
The median of 6 hobbyist measurements gives it a solid Harman preference score of 73 with a 1.80 dB spread.
Amazon $369.00 eBayPrices on this page were last checked October 16, 2026 at 5:46 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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Specifications Side By Side
| ISN H60 | Linsoul Avant | |
|---|---|---|
| Price | $349.00 | $369.00 |
| Ranked | #542 of 1291 in In-Ear Headphones | #475 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 72 (median of 4 squig.link measurements, calibrated to AutoEQ) | 73 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.13 dB standard deviation | 1.80 dB standard deviation |
| Tonal Tilt | -0.34 (negative is warmer, positive brighter) | -0.50 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.6 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.5 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (4 dynamic + 6 balanced armature) | Hybrid (2 dynamic + 3 balanced armature + 1 MEMS) |
| Drivers | 4 x dynamic + 6 x balanced armature | 2 x 10mm dynamic + 3 x balanced armature + 1 x MEMS |
| Impedance | - | 12 ohms |
| Sensitivity | - | 104 dB |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the ISN H60 from avishai, dl, flare, theaudiostore and treblewellxtended; the Linsoul Avant from aftersound, audioamigo, bloomaudio, elrics, jaytiss and takeitslow7, all via squig.link.
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