Short answer: a tie on sound quality. Both are rated 4.3/5 (#137 and #142 of 450 in-ear headphones) at nearly the same price ($34.99 vs $36.99), so choose on features and fit.
Buy the 7Hz Elua Ultra or the KZ Vader Pro on features: they are rated the same for sound quality at close to the same price.
Looking for alternatives? See the complete Headphones rankings.
Specifications Side By Side
| 7Hz Elua Ultra | KZ Vader Pro | |
|---|---|---|
| Price | $34.99 | $36.99 |
| Ranked | #137 of 450 in In-Ear Headphones | #142 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 78 (median of 9 squig.link measurements, calibrated to AutoEQ) | 78 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.42 dB standard deviation | 1.57 dB standard deviation |
| Tonal Tilt | -0.64 (negative is warmer, positive brighter) | +0.45 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic | 3 x dynamic |
| Impedance | 19 ohms | 18 ohms |
| Sensitivity | 108 dB/V | 106 dB/mW |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 5Hz - 45kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
Related Headphone Comparisons
How 7Hz Elua Ultra compares with other leading options:
- 7Hz Elua Ultra vs KZ ZS12 Pro 2
- 7Hz Elua Ultra vs Moondrop Space Travel
- 7Hz Elua Ultra vs Kiwi Ears Cadenza
- Kiwi Ears Cadenza vs KZ Vader Pro
- KZ Vader Pro vs KZ ZS12 Pro 2
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.
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The Two Headphones In Full
7Hz Elua Ultra: $34.99 Amazon eBay
Full 7Hz Elua Ultra review and specifications →
| Released | Jul 2025 (1 year ago) |
|---|---|
| Back | Closed |
| Built-in Microphone | No |
| Connection | Wired |
| Deviation From Target | 1.42 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x 8mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 78 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 19 ohms |
| Sensitivity | 108 dB/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.2 dB at 30 Hz) |
| Tonal Tilt | -0.64 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
KZ Vader Pro: $36.99 Amazon eBay
Full KZ Vader Pro review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.57 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 3 x dynamic |
| Form Factor | In-ear |
| Frequency Response | 5Hz - 45kHz (Manufacturer specified) |
| Harman Preference Score | 78 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 18 ohms |
| Sensitivity | 106 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) |
| Tonal Tilt | +0.45 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons