Short answer: the HZSOUND Luna. It ranks #808 of 1291 in-ear headphones by sound quality, rated 3.5/5, at $29.99; the FiiO FD11 ranks #908, rated 3.3/5, and costs $32.99, so there is little reason to consider the other one.
Why pick the HZSOUND Luna: A broadly balanced tuning with a preference score of 68 against the Harman target. Watch for: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Why pick the FiiO FD11: Bass is lifted about 3.6 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. The tradeoff: Its 2.40 dB spread is less even than the best measured sets.
Buy the HZSOUND Luna. It is rated higher for sound quality than the FiiO FD11 and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Headphones rankings.
A broadly balanced tuning with a preference score of 68 against the Harman target.
Amazon $29.99 eBayBass is lifted about 3.6 dB with extension to 20 Hz, giving kick drums and bass lines extra weight.
Amazon $32.99 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
| HZSOUND Luna | FiiO FD11 | |
|---|---|---|
| Price | $29.99 | $32.99 |
| Ranked | #808 of 1291 in In-Ear Headphones | #908 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 68 (median of 7 squig.link measurements, calibrated to AutoEQ) | 65 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.31 dB standard deviation | 2.40 dB standard deviation |
| Tonal Tilt | -0.69 (negative is warmer, positive brighter) | -0.89 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.8 dB at 30 Hz) |
| Connection | Wired (3.5mm) | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 Dynamic (10mm flat diaphragm) | 1 x 10mm dynamic |
| Impedance | - | 24 ohms |
| Sensitivity | - | 111 dB/mW |
| Frequency Response | - | 20Hz - 40kHz (Manufacturer specified) |
| Weight | - | 0 lbs (10 g) |
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 HZSOUND Luna from audioamigo, eplv, pw, soundcheck39, theaudiostore, tonedeafmonk and treblewellxtended; the FiiO FD11 from adri-n, aftersound, ankramutt, arn, dchpgall, digaoreviews, ekaudio, fahryst, ianfann, mmagtech, superreview, theaudiostore and treblewellxtended, all via squig.link.
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