Short answer: the EPZ Q5 Pro. Both are rated 4.9/5 for sound quality (#19 and #8 of 1291 in-ear headphones), and the EPZ Q5 Pro costs $73.09 against $99 for the EPZ Q5, and with sound quality even, the cheaper one is the better buy.
What the EPZ Q5 does well: The median of 28 hobbyist measurements gives it a preference score of 87 with only about 0.85 dB average deviation, so tonal balance is very close to what most listeners prefer. The catch: The 10 to 16 kHz air region sits about 4 dB above target, so bright recordings and hi hats can sound slightly sharp.
Why pick the EPZ Q5 Pro: The median of 17 hobbyist measurements gives it an excellent Harman preference score of 85 with a 0.95 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. The tradeoff: Its 0.95 dB spread is less even than the best measured sets.
Buy the EPZ Q5 Pro. Both are rated the same for sound quality, and it costs $25.91 less than the EPZ Q5.
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The median of 28 hobbyist measurements gives it a preference score of 87 with only about 0.85 dB average deviation, so tonal balance is very close to what most listeners prefer.
Amazon $99.00 eBay
The median of 17 hobbyist measurements gives it an excellent Harman preference score of 85 with a 0.95 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural.
AliExpress $73.09 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
| EPZ Q5 | EPZ Q5 Pro | |
|---|---|---|
| Price | $99.00 | $73.09 |
| Ranked | #8 of 1291 in In-Ear Headphones | #19 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 87 (median of 28 squig.link measurements, calibrated to AutoEQ) | 85 (median of 17 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 0.85 dB standard deviation | 0.95 dB standard deviation |
| Tonal Tilt | -0.12 (negative is warmer, positive brighter) | -0.18 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.5 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 26 ohms | 24 ohms |
| Sensitivity | 109 dB | - |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
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 EPZ Q5 from achoreviews, aftersound, arn, bedrock, cammyfi, cqtek, digaoreviews, dl, fahryst, hbb, hobbytalk, ianfann, iemworld, jaytiss, joshtbvo, kuping-sensi, mmagtech, musicafe, obodio, practiphile, pw, regancipher, soundcheck39, soundignity, superreview, suporsalad, tonedeafmonk and vortexreviews; the EPZ Q5 Pro from aftersound, awsmdanny, dl, fahryst, hobbytalk, iemworld, koi, kuping-sensi, musicafe, obodio, practiphile, pw, soundcheck39, soundignity, suporsalad, tonedeafmonk and vortexreviews, all via squig.link.
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