Short answer: a tie on sound quality. Both are rated 4.4/5 (#101 and #100 of 450 in-ear headphones) at nearly the same price ($51.25 vs $53.99), so choose on features and fit.
Why pick the KZ PR2: Its 13.2 mm planar driver scores 78.8 in the median of 13 squig.link measurements, with bass and mids held within about 1 dB of target from 20 Hz to 3 kHz. Watch for: At 94 dB sensitivity it needs noticeably more volume than most in-ears, so weak phone outputs may run out of headroom.
Why pick the TRN Medusa: Thirteen hobbyist measurements on squig.link put the Medusa at a preference score of 78.7, with a single 12mm dynamic driver that holds bass almost exactly on target down to 30 Hz. The catch: The air band runs about 6.5 dB above target and peaks 8.6 dB near 11.9 kHz, so it can sound hissy and fatiguing with bright mixes or at high volume.
Buy the KZ PR2 or the TRN Medusa on features: they are rated the same for sound quality at close to the same price.
Want more options? Browse the full Headphones rankings.
Specifications Side By Side
| KZ PR2 | TRN Medusa | |
|---|---|---|
| Price | $51.25 | $53.99 |
| Ranked | #101 of 450 in In-Ear Headphones | #100 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 79 (median of 13 squig.link measurements, calibrated to AutoEQ) | 79 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.61 dB standard deviation | 1.55 dB standard deviation |
| Tonal Tilt | -0.15 (negative is warmer, positive brighter) | +0.10 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.2 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Dynamic |
| Drivers | 1 x 13.2mm planar magnetic | 1 x 12mm dynamic |
| Impedance | 15 ohms | 30 ohms |
| Sensitivity | 94 dB | 108 dB |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
| Weight | - | 0 lbs (5.1 g) per earbud |
Related Headphone Comparisons
How TRN Medusa compares with other leading options:
- Kefine Klean vs TRN Medusa
- TANGZU Wan’er SG Studio Edition vs TRN Medusa
- KZ ZEX Pro vs TRN Medusa
- KZ PR2 vs KZ ZEX Pro
- KZ PR2 vs Rose Technics QT-X
Prices on this page were last checked October 11, 2026 at 4:59 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Headphones In Full
KZ PR2: $51.25 Amazon eBay
Pros: Its 13.2 mm planar driver scores 78.8 in the median of 13 squig.link measurements, with bass and mids held within about 1 dB of target from 20 Hz to 3 kHz. Sub-bass sits 0.9 dB above target and extends fully to 20 Hz, so it delivers clean, solid low end. A strong 7.4 dB lift in the air band gives an open, detailed top that suits listeners who like a v-shaped sparkle.
Cons: At 94 dB sensitivity it needs noticeably more volume than most in-ears, so weak phone outputs may run out of headroom. The 6.4 dB peak near 10 kHz alongside a 4.3 dB dip near 6.7 kHz can make treble sound uneven, with cymbals that sizzle while some vocal edge recedes.
Full KZ PR2 review and specifications →
| Released | Apr 2023 (3 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.61 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 13.2mm planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 79 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 15 ohms |
| Sensitivity | 94 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.9 dB at 30 Hz) |
| Tonal Tilt | -0.15 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
TRN Medusa: $53.99 Amazon eBay
Pros: Thirteen hobbyist measurements on squig.link put the Medusa at a preference score of 78.7, with a single 12mm dynamic driver that holds bass almost exactly on target down to 30 Hz. Midbass sits 1.7 dB above target for punchy drums, while vocals in the 1 to 3 kHz range come through clearly. It weighs 5.1 g per earbud and its 30 ohm, 108 dB load is easy for any phone.
Cons: The air band runs about 6.5 dB above target and peaks 8.6 dB near 11.9 kHz, so it can sound hissy and fatiguing with bright mixes or at high volume. It costs a little more than the equally rated KBEAR KB02 and CCA Pianist.
Full TRN Medusa review and specifications →
| Released | 2024 (2 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.55 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 12mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 79 (median of 13 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 30 ohms |
| Sensitivity | 108 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.2 dB at 30 Hz) |
| Tonal Tilt | +0.10 (negative is warmer, positive brighter) |
| Weight | 0 lbs (5.1 g) per earbud |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons