Short answer: the ISN Audio EBC80. It ranks #628 of 1291 in-ear headphones by sound quality, rated 3.7/5, at $699; the Sennheiser IE 600 ranks #819, rated 3.5/5, and costs $699.95, which makes this an easy call rather than a real tradeoff.
The case for the ISN Audio EBC80: An unusual eight driver hybrid combines dynamic, balanced armature, electrostatic and bone conduction drivers in each earpiece. The catch: Low mids sit about 2.2 dB above target, which thickens male vocals and can make busy mixes sound slightly congested, and its preference score of 69.9 comes with a less even 2.18 dB deviation.
The case for the Sennheiser IE 600: Sub-bass extends to 20 Hz with a slight 1.7 dB lift, and bass, low mids and upper mids all sit within about 1.3 dB of target, so the core of most music sounds full and natural. Watch for: In oratory1990’s measurement a 7.6 dB dip near 5.9 kHz and a presence band 5.5 dB under target take bite out of vocals and guitars, while a 4.7 dB peak near 9.7 kHz can sound sharp.
Buy the ISN Audio EBC80. It is rated higher for sound quality than the Sennheiser IE 600 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Headphones rankings.
An unusual eight driver hybrid combines dynamic, balanced armature, electrostatic and bone conduction drivers in each earpiece.
Amazon $699.00 eBay
Sub-bass extends to 20 Hz with a slight 1.7 dB lift, and bass, low mids and upper mids all sit within about 1.3 dB of target, so the core of most music sounds full and natural.
B&H Photo Video $699.95 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| ISN Audio EBC80 | Sennheiser IE 600 | |
|---|---|---|
| Price | $699.00 | $699.95 |
| Ranked | #628 of 1291 in In-Ear Headphones | #819 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 70 (median of 6 squig.link measurements, calibrated to AutoEQ) | 67 (measured by oratory1990, via AutoEQ) |
| Deviation From Target | 2.18 dB standard deviation | 2.46 dB standard deviation |
| Tonal Tilt | -0.55 (negative is warmer, positive brighter) | -0.80 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+2.3 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (2 dynamic + 2 balanced armature + 2 electrostatic + 2 bone conduction) | Dynamic |
| Drivers | 2 x dynamic + 2 x balanced armature + 2 x electrostatic + 2 x bone conduction | 1 x 7mm dynamic |
| Impedance | 13 ohms | 18 ohms |
| Sensitivity | 106 dB | 118 dB SPL/V |
| Built-in Microphone | No | No |
| Frequency Response | - | 4Hz - 46.5kHz (Manufacturer specified) |
| Weight | - | 0 lbs (6 g) per earbud |
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 Audio EBC80 from ducbloke, eliseaudio, flare, jaytiss, lown-fi and pw; the Sennheiser IE 600 from achoreviews, adri-n, aftersound, animagus, aquaphobic, atechreviews, audioamigo, boizoff, csi-zone, dentreviews, digaoreviews, dl, ekaudio, eliseaudio, fahryst, freeryder05, gadgetrytech, harutohiroki, hbb, hobbytalk, hu-fi, iemocean, iemworld, jaytiss, kazi, lestat, mmagtech, musicafe, nymz, precog, recode, seanwee, sl0the, soundignity, superreview, theaudiostore, therollo9, timmyv and treblewellxtended, all via squig.link.
Related Headphone Comparisons
More worthwhile head-to-heads for ISN Audio EBC80: