Short answer: the Technics EAH-AZ70W. Both are rated 3.6/5 for sound quality (#714 and #775 of 1291 in-ear headphones), and the Technics EAH-AZ70W costs $137.57 against $149.99 for the TOZO Golden X1, with sound quality a draw, the lower price decides it.
The case for the Technics EAH-AZ70W: Crinacle’s measurement gives it a solid Harman preference score of 69 with a 2.60 dB spread. The tradeoff: Its 2.60 dB spread is less even than the best measured sets.
The case for the TOZO Golden X1: A broadly balanced tuning with a preference score of 68 against the Harman target. The tradeoff: An uneven response, 2.1 dB standard deviation from target.
Buy the Technics EAH-AZ70W. Both are rated the same for sound quality, and it costs $12.42 less than the TOZO Golden X1.
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Crinacle’s measurement gives it a solid Harman preference score of 69 with a 2.60 dB spread.
Amazon $137.57 eBay
A broadly balanced tuning with a preference score of 68 against the Harman target.
Amazon $149.99 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
| Technics EAH-AZ70W | TOZO Golden X1 | |
|---|---|---|
| Price | $137.57 | $149.99 |
| Ranked | #714 of 1291 in In-Ear Headphones | #775 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Connection | True wireless | Bluetooth |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x 10mm dynamic | 1 Dynamic (12mm), 1 Balanced Armature |
| Frequency Response | 20Hz - 20kHz | - |
| Weight | 0 lbs (7g) per earbud | - |
| Harman Preference Score | 69 (measured by crinacle, via AutoEQ) | 68 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.60 dB standard deviation | 2.11 dB standard deviation |
| Tonal Tilt | +0.01 (negative is warmer, positive brighter) | -1.01 (negative is warmer, positive brighter) |
| Back | - | Closed |
| Sub-bass Extension | - | Within 6 dB of target down to 20 Hz (+3.0 dB at 30 Hz) |
| Bluetooth | - | Yes |
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