Technics EAH-AZ100
The reference standard. Technics borrowed their magnetic fluid driver technology from the $1,199 EAH-TZ700 wired IEMs, creating what multiple reviewers call 'the best TWS sound under $400.'
Our Verdict
The most technically accomplished TWS for music—dual-driver design with magnetic fluid woofer delivers audiophile-grade sound with exceptional bass and clarity.
Score Breakdown
Pros & Cons
✓ Pros
- •10mm magnetic fluid drivers
- •3-way multipoint (industry first)
- •Reference-grade transparency
- •LDAC and LC3 (LE Audio) support
- •Outstanding dynamics
✗ Cons
- •Comfort limited to ~3 hours for some
- •ANC trails Apple's implementation
- •Premium price
Specifications
| Driver | 10mm magnetic fluid, aluminum diaphragm |
| Frequency Response | 3Hz-40kHz |
| Codecs | LDAC, AAC, SBC, LC3 |
| Battery | 10h / 28h total |
| Water Resistance | IPX4 |
Who Is This For?
Best For
- ✓Audiophiles
- ✓Multi-device users
- ✓Critical listeners
Not For
- ✗Those with small ears
- ✗ANC-priority users
Where to Buy
Appears In
Best Wireless Earbuds 2025
Ranked #1
Alternatives to Consider
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HiFiMAN Arya Stealth Magnet
HiFiMAN
The most dramatic value proposition in high-end audio. Originally $1,599, the Arya Stealth now sells for $600-650—delivering flagship planar magnetic technology at mid-tier pricing.