Technics EAH-AZ40-N

The Technics EAH-AZ40 is a true wireless in-ear headphone with best-in-class mic quality for calls, but weak battery life, comfort, and noise cancelling. It's a specialist for heavy phone and video call users. For most people, the Sony WF-C700N or EarFun Air Pro 4+ offer better all-around value.

Let's talk numbers. The mic quality is the star here, landing in the 98th percentile. That means the EAH-AZ40 is one of the absolute best true wireless buds for phone calls and video calls right now. The six-mic array with JustMyVoice tech does a great job of pulling your voice out of noisy environments and cutting wind noise. If you spend your day on Zoom or walking and talking, these are a standout.

Sound quality is solid, sitting in the 72nd percentile. That's above average, and the Hi-Res audio support helps. You get a rich, expansive sound that works well for music, audiobooks, and movies. But the ANC is a weak spot at the 31st percentile. It's there, but it's not going to block out a busy commute or a loud office. The battery is also rough: 7.5 hours in the buds and 25 total with the case puts it in the 19th percentile. That's below most competitors in this price range.

The EAH-AZ40's biggest problem is the competition. The Sony WF-C700N is a direct rival at a similar price, and it offers better noise cancelling and a more comfortable fit. The EarFun Air Pro 4+ is another strong option, with better battery life and a more balanced feature set. If you want the best call quality, the Technics wins, but that's a narrow victory.

Against the Apple AirPods Pro 3rd Generation or the Bose QuietComfort Ultra, the AZ40 isn't really in the same league. Those are premium buds with excellent ANC, comfort, and ecosystem integration. The Technics is a budget-friendly specialist. It's for people who prioritize call clarity above everything else and are willing to accept compromises on battery, comfort, and noise cancelling.

At $90 USD, the EAH-AZ40 is priced like a midrange true wireless bud, but it doesn't deliver midrange performance across the board. The call quality is genuinely top-tier, and that's worth something if you're a heavy phone user. But the battery life and ANC are weak, and the comfort score is concerning. For the same money, you can get the Sony WF-C700N or the EarFun Air Pro 4+, both of which offer better all-around performance. The Technics name carries some weight, but here it feels like you're paying a premium for the mic tech and not much else.

The Technics EAH-AZ40 is a true wireless in-ear headphone that sits in a weird spot. It carries the Technics name, which usually means serious audio pedigree, but it's priced around $90 USD in the US, which puts it in the budget-to-midrange true wireless bracket. That's a crowded space, and the AZ40 has to fight against some heavy hitters. The pitch here is simple: legendary Technics engineering for clear calls, rich audio, and a comfortable fit. The reality is a bit more mixed.

If you're searching for "Technics EAH-AZ40 review" or wondering if these are good for calls, here's the short version. The mic setup is genuinely impressive, with six mics and JustMyVoice tech that ranks in the 98th percentile in our database. That's best-in-class territory for call quality. But the battery life, comfort, and noise cancelling all land well below average. So you're getting a specialist, not an all-rounder.

These are IPX4 rated, support multipoint Bluetooth, and come with four eartip sizes. The app is the Technics Audio Connect app, which handles setup and sound tweaks. It's a feature set that looks good on paper, but the scores tell a more specific story. This is a call-focused bud with some real compromises elsewhere.

Skip the EAH-AZ40 if you care about battery life, comfort, or noise cancelling. Commuters will find the weak ANC and below-average battery frustrating. Gamers should look elsewhere too, since the gaming score is mediocre. If you want a comfortable all-day bud with good ANC, the Sony WF-C700N or EarFun Air Pro 4+ are better picks. And if you're already in the Apple ecosystem, the AirPods Pro 3rd Generation is a much more complete package, though it costs more.

Should you buy the Technics EAH-AZ40? Only if call quality is your number one priority and you don't care much about battery life or noise cancelling. The mic performance is genuinely excellent, and the multipoint connectivity is handy if you bounce between a laptop and phone all day. But for most people, there are better options at this price.

If you want a true wireless bud for music, commuting, or all-day wear, look elsewhere. The comfort score is a red flag, and the battery life will frustrate you. The AZ40 is a niche product that does one thing really well and a lot of things just okay. It's not a bad buy, but it's not the easy recommendation the Technics name might suggest.