Short answer: the Hidizs MP145. It ranks #638 of 1291 in-ear headphones by sound quality, rated 3.7/5, at $159.99; the FiiO FD15 ranks #720, rated 3.6/5, and costs $164.99, so there is little reason to consider the other one.
What the Hidizs MP145 does well: The median of 27 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.16 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural. The catch: Presence sits about 3.9 dB low with a 4.7 dB dip near 3.6 kHz, so vocals and instruments lose some bite.
Why pick the FiiO FD15: A large 13.8mm dynamic driver with 32 ohm impedance and 112 dB/mW sensitivity makes it easy to drive loud from a phone. The catch: Presence sits 5.8 dB below target with an 8.4 dB dip at 6.5 kHz, so vocals lose clarity and cymbals sound dull, and treble from 6 to 10 kHz is down 4.1 dB as well.
Buy the Hidizs MP145. It is rated higher for sound quality than the FiiO FD15 and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Headphones rankings.
The median of 27 hobbyist measurements gives it a solid Harman preference score of 70 with a 2.16 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural.
Amazon $159.99 eBay
A large 13.8mm dynamic driver with 32 ohm impedance and 112 dB/mW sensitivity makes it easy to drive loud from a phone.
Amazon $164.99 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
| Hidizs MP145 | FiiO FD15 | |
|---|---|---|
| Price | $159.99 | $164.99 |
| Ranked | #638 of 1291 in In-Ear Headphones | #720 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Planar | Dynamic |
| Drivers | 1 x 14.5mm planar magnetic | 1 x 13.8mm dynamic |
| Impedance | 30 ohms | 32 ohms |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 10Hz - 40kHz (Manufacturer specified) |
| Weight | 0 lbs (9 g) | 0 lbs (12 g) per earbud |
| Harman Preference Score | 70 (median of 27 squig.link measurements, calibrated to AutoEQ) | 69 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.16 dB standard deviation | 2.52 dB standard deviation |
| Tonal Tilt | -0.59 (negative is warmer, positive brighter) | -0.30 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-3.9 dB at 30 Hz) |
| Sensitivity | - | 112 dB/mW |
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 Hidizs MP145 from achoreviews, aden, atechreviews, audioamigo, bedrock, boizoff, cammyfi, dchpgall, dl, eliseaudio, fahryst, hbb, hobbytalk, ianfann, jaytiss, kazi, lown-fi, practiphile, pw, rg, soundcheck39, soundignity, tdl, theaudiostore, therollo9, treblewellxtended and zerostresslevel; the FiiO FD15 from boizoff, breampike, ekaudio, iemocean, jaytiss, pw and timmyv, all via squig.link.
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