Short answer: the InEar StageDiver SD5. It ranks #997 of 1291 in-ear headphones by sound quality, rated 3.0/5, at $845; the Moondrop Illustrious ranks #1021, rated 2.9/5, and costs $899, so there is not much of a tradeoff to weigh.
Why pick the InEar StageDiver SD5: With a very high 120 dB sensitivity it reaches loud levels from any phone or stage monitor pack with almost no volume needed. The catch: Its response deviates about 3.2 dB from target on average, an uneven tuning that colors many recordings.
The case for the Moondrop Illustrious: Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. The tradeoff: Presence sits about 3.1 dB low with a 6.6 dB dip near 9.7 kHz, so vocals and instruments lose some bite.
Buy the InEar StageDiver SD5. It is rated higher for sound quality than the Moondrop Illustrious and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
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With a very high 120 dB sensitivity it reaches loud levels from any phone or stage monitor pack with almost no volume needed.
Thomann $845.00 eBay
Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural.
Amazon $899.00 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
| InEar StageDiver SD5 | Moondrop Illustrious | |
|---|---|---|
| Price | $845.00 | $899.00 |
| Ranked | #997 of 1291 in In-Ear Headphones | #1021 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 61 (measured by crinacle, via AutoEQ) | 60 (median of 12 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 3.23 dB standard deviation | 3.11 dB standard deviation |
| Tonal Tilt | -0.34 (negative is warmer, positive brighter) | +0.59 (negative is warmer, positive brighter) |
| Connection | Wired | Wired |
| Sensitivity | 120 dB | 124 dB/Vrms |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 10Hz - 50kHz |
| Built-in Microphone | No | - |
| Driver Type | - | Dynamic |
| Drivers | - | 1 x 11mm dynamic |
| Impedance | - | 25 ohms |
| Sub-bass Extension | - | Falls 6 dB below target at 50 Hz (-8.2 dB at 30 Hz) |
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