Short answer: the EPZ 550. Both are rated 4.1/5 for sound quality (#227 and #217 of 450 in-ear headphones), and the EPZ 550 costs $519.99 against $600 for the Oriolus Isabellae, and with sound quality even, the cheaper one is the better buy.
What the Oriolus Isabellae does well: A single 9.8mm dynamic driver earns a preference score of 75 from crinacle, and squig.link measurements show a 3.2 dB upper bass lift that gives a warm, punchy foundation without bloating the mids. The catch: Across hobbyist measurements a 7 dB peak near 11.2 kHz adds sparkle that can tip into sibilance or splash on bright recordings.
Buy the EPZ 550. Both are rated the same for sound quality, and it costs $80.01 less than the Oriolus Isabellae.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| EPZ 550 | Oriolus Isabellae | |
|---|---|---|
| Price | $519.99 | $600.00 |
| Ranked | #227 of 450 in In-Ear Headphones | #217 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 75 (median of 7 squig.link measurements, calibrated to AutoEQ) | 75 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 1.85 dB standard deviation | 2.14 dB standard deviation |
| Tonal Tilt | +0.07 (negative is warmer, positive brighter) | +0.11 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.3 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Dynamic |
| Drivers | 5 x balanced armature | 1 x 9.8mm dynamic |
| Sensitivity | 105 dB | 113 dB |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 10Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | No | No |
| Impedance | - | 30 ohms |
Related Headphone Comparisons
How Oriolus Isabellae compares with other leading options:
- Moritz Dragon vs Oriolus Isabellae
- Oriolus Isabellae vs Fearless Audio S8Z
- Oriolus Isabellae vs Hisenior Mega5EST 7th Anniversary Edition
- Moritz Dragon vs EPZ 550
- EPZ 550 vs Hisenior Mega5EST 7th Anniversary Edition
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
EPZ 550: $519.99 Amazon eBay
Full EPZ 550 review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.85 dB standard deviation |
| Driver Type | Balanced armature |
| Drivers | 5 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 75 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Sensitivity | 105 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.3 dB at 30 Hz) |
| Tonal Tilt | +0.07 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Oriolus Isabellae: $600.00 Shenzhenaudio eBay
Pros: A single 9.8mm dynamic driver earns a preference score of 75 from crinacle, and squig.link measurements show a 3.2 dB upper bass lift that gives a warm, punchy foundation without bloating the mids. The upper mids sit right on target, so vocals come through clearly, and the tuning suits warm and V-shaped tastes. At 30 ohms and 113 dB sensitivity it runs well from a phone, and it rates higher than the DUNU Zen and Unique Melody MEXT.
Cons: Across hobbyist measurements a 7 dB peak near 11.2 kHz adds sparkle that can tip into sibilance or splash on bright recordings. The presence band sits 2.2 dB low with a dip near 6.1 kHz, softening some edge on vocals and snare.
Full Oriolus Isabellae review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 2.14 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 9.8mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 75 (measured by crinacle, via AutoEQ) |
| Impedance | 30 ohms |
| Sensitivity | 113 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) |
| Tonal Tilt | +0.11 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -3.2 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 | +3.0 dB | 0.70 |
| Peak | 164 Hz | -3.0 dB | 0.57 |
| Peak | 811 Hz | +3.0 dB | 0.93 |
| Peak | 2,118 Hz | -3.7 dB | 1.06 |
| Peak | 4,046 Hz | +2.7 dB | 0.56 |
| High shelf | 10,000 Hz | -3.7 dB | 0.70 |
| Peak | 9,820 Hz | +2.1 dB | 3.00 |
| Peak | 4,929 Hz | -1.9 dB | 5.54 |
| Peak | 6,128 Hz | +1.8 dB | 6.00 |
| Peak | 3,633 Hz | +0.9 dB | 3.73 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons