Short answer: the EPZ G30. It ranks #42 of 450 in-ear headphones by sound quality, rated 4.6/5, at $79.99; the EPZ 550 ranks #227, rated 4.1/5, and costs $519.99, so there is little reason to consider the other one.
The EPZ G30 is the better-sounding pick. Four hobbyist measurements on squig.link give it a preference score of 81.5 with a smooth 1.35 dB deviation. The catch: Presence falls about 3.2 dB below target, which tucks vocals slightly behind the instruments.
Buy the EPZ G30. It is rated higher for sound quality than the EPZ 550 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.
Specifications Side By Side
| EPZ 550 | EPZ G30 | |
|---|---|---|
| Price | $519.99 | $79.99 |
| Ranked | #227 of 450 in In-Ear Headphones | #42 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) | 82 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.85 dB standard deviation | 1.35 dB standard deviation |
| Tonal Tilt | +0.07 (negative is warmer, positive brighter) | -0.17 (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 (-1.4 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 5 x balanced armature | 1 x 9.2mm dynamic + 1 x balanced armature |
| Sensitivity | 105 dB | - |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| Built-in Microphone | No | Yes |
| Weight | - | 0 lbs (4.4 g) per earbud |
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Prices on this page were last checked October 10, 2026 at 5:37 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
EPZ G30: $79.99 Amazon eBay
Pros: Four hobbyist measurements on squig.link give it a preference score of 81.5 with a smooth 1.35 dB deviation. Bass sits about 0.9 dB above target with low mids close behind, giving a warm, full sound that suits bassy tastes. It weighs just 4.4 g per earbud and includes a built-in microphone, so it works for calls as well as music.
Cons: Presence falls about 3.2 dB below target, which tucks vocals slightly behind the instruments. A 5.0 dB peak near 8.1 kHz followed by a 5.6 dB dip near 11.9 kHz gives cymbals an uneven sheen and trims top-end air.
Full EPZ G30 review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | Yes |
| Connection | Wired |
| Deviation From Target | 1.35 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 9.2mm dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Harman Preference Score | 82 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.4 dB at 30 Hz) |
| Tonal Tilt | -0.17 (negative is warmer, positive brighter) |
| Weight | 0 lbs (4.4 g) per earbud |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons