Soundcore A40 Wireless Earbuds: A Feature-Packed Wireless Listening Experience

Published on June 10, 2023, 5:38 p.m.

The Soundcore A40 earbuds are Anker’s latest noise cancelling wireless earbuds aimed at providing a high-quality listening experience with long battery life. Let’s take a look at how these buds perform for key factors like battery, sound, noise cancellation, and comfort.


The Soundcore A40 earbuds pack impressive technology into a compact and lightweight package. The headline features include excellent battery life, customized sound via the Soundcore app, adaptive noise cancellation, and a secure comfort-focused design. Do these earbuds live up to their promises? Let’s dig into the details.

 Soundcore A40 Auto-Adjustable Wireless Earbuds

Key Features

  • Adaptive noise cancelling: Automatically adjusts to your environment to block out distracting sounds. Enjoy your personal space whether you’re on a plane, outdoors, commuting or anywhere.

  • Long-lasting battery: Get up to 50 hours total playtime—10 hours on a single charge plus 40 extra hours with the charging case. And fast charging gives you 4 hours of playtime from just a 10-minute charge.

  • Customizable sound: Tune your listening with the Soundcore app’s EQ presets and audio test for a personalized experience. Listen Hi-Res Audio details over LDAC.

  • Compact comfort fit: Weighing just 0.25oz each, the Soundcore A40 Auto-Adjustable Wireless Earbuds are lightweight with an ergonomic shape that fits comfortably and securely in your ears.

 Soundcore A40 Auto-Adjustable Wireless Earbuds

Design: Lightweight with Secure Fit

Weighing just 0.25oz each, the Soundcore A40 Auto-Adjustable Wireless Earbuds are lightweight and comfortable for extended wear. Multiple eartip sizes help achieve a tailored fit. The ergonomic shape stays put during activity according to most users, although some report the occasional loose fit. Overall, the compact design is praised for comfort while providing noise isolation.

 Soundcore A40 Auto-Adjustable Wireless Earbuds

Sound Quality: Detailed and Balanced

Reviewers praise the sound quality of the Soundcore A40 Auto-Adjustable Wireless Earbuds, with many impressed by the detailed and balanced sound profile right out of the box. The dual drivers deliver strong bass, crisp mids, and bright treble based on the reviews. The Soundcore app allows you to customize the sound further with EQ presets and an audio test.

Noise Cancellation: Automatically Adapts to Your Surroundings

The adaptive noise cancellation uses microphones to detect ambient noise and adjust the level of noise reduction accordingly. Users report it significantly reduces environmental sounds from airplane cabins to lawnmowers. Wind noise reduction mode also works well. It’s not as strong as over-ear ANC headphones but reviewers say it’s very good for earbuds.

Call Quality:

Excellent Noise Cancellation but Sound Could Be Better Users report great noise cancellation during calls but say the sound quality is not as natural or crisp as some competitor earbuds. Still very solid call performance overall.

Noise Cancellation

Leveraging 6 noise cancelling microphones and an upgraded noise cancelling algorithm, the Soundcore A40 Auto-Adjustable Wireless Earbuds provide very effective noise reduction for the price point according to reviews.

The adaptive noise cancellation automatically detects the ambient sound and adjusts the level of noise cancelling needed. This provides great performance whether in an airplane, office, crowd, or other noisy environment.

Connectivity: Bluetooth 5.2 with Multipoint Pairing

You can connect the Soundcore A40 Auto-Adjustable Wireless Earbuds to two devices simultaneously via Bluetooth 5.2, seamlessly switching between music, calls, videos etc. Some users experienced occasional connection drops but reported solid overall connectivity.

 Soundcore A40 Auto-Adjustable Wireless Earbuds

Battery Life: Up to 50 Hours of Playtime

The Soundcore A40 Auto-Adjustable Wireless Earbuds boast a whopping 50 hours of total playtime, with 10 hours per single charge on the buds themselves and an additional 40 hours from the charging case. Reviewers confirm the long-lasting battery, with some using the buds for a full week without needing to recharge. The fast charging gives you 4 hours of playtime from just a 10-minute charge, excellent for quick top-ups.

Controls and App: Highly Customizable

The touch controls are fully customizable through the Soundcore app so you can personalize shortcuts. Users praise how responsive the touch controls are. The app also unlocks EQ presets, HearID audio testing, gaming mode, fit testing and other handy features.

Water Resistance

With an IPX4 rating, the Soundcore A40 Auto-Adjustable Wireless Earbuds are resistant to splashes, sweat and light rain. You can confidently wear them for workouts and in humid conditions without damage. But they aren’t suitable for swimming or showering.

Use Cases

The Soundcore A40 earbuds are perfect for:

  • Commuting and travel - Block out noise on planes, trains, buses etc with powerful adaptive noise cancellation. The compact charging case fits easily in your bag.

  • Outdoors activities - Focus on your workout or walk with your tunes, not the distracting sounds around you. Sweat and water resistance keeps them going.

  • Working from home - Tune out household distractions and background noise during video calls and focus sessions. The long battery life keeps you powered up.

  • Relaxing at home - Customize your listening experience with the app and enjoy high fidelity sound. The comfortable fit is great for extended listening.

User Feedback Analysis

Reviewers have flooded the internet sharing their experiences with the Soundcore A40 earbuds, creating a robust trove of insights. Let’s delve into the praise and critiques from real-world users.

Myriad users extol the Soundcore A40 Auto-Adjustable Wireless Earbuds’s stellar battery life. They are awestruck at reaching for the earbuds day after day without needing a recharge, thanks to the10-hour buds and 40-hour case. The fast charging also dazzles users, injecting 4 hours of playtime with just a 10-minute top-up.

The sound quality elicits oodles of positive feedback. Users revel in the lively bass, scintillating treble and clear midranges produced by the dual drivers. Many declare the balanced, detailed sound rivals far pricier models. The ability to customize the audio to their liking with the app earns high praise as well.

Noise cancellation performance collects mountains of positive reviews. Users are jubilant at how well the adaptive noise cancellation drowns out airplane roars, lawnmower growls, and other distractions. For budget-friendly earbuds, the noise neutralizing impresses buyers enormously.

Ergonomics and comfort gather glowing remarks. Users appreciate the feathery lightweight and contoured in-ear fit providing tailored security without squeeze or irritation. This makes the Soundcore A40 Auto-Adjustable Wireless Earbuds perfect for hour-long listening sessions.

Connectivity reaps mixed feedback. Though mainly stable, sporadic Bluetooth dropouts peeve some users. But others encounter no issues, lavishing praise on the steadfast wireless connection and multipoint pairing.

Call quality earns solid marks, although some wish voice transmission sounded more natural. But users welcome the excellent noise reduction when chatting in noisy environments. Overall call performance satisfies most reviewers.

In summary, delighted users applaud nearly every aspect of the feature-packed Soundcore A40 Auto-Adjustable Wireless Earbuds, from divine sound to artful design. Any criticisms are minor next to the avalanche of positive experiences with these value-packed noise cancelling wireless earbuds.


  • Excellent value and features for the price
  • Strong battery life
  • Great sound quality with customizable audio
  • Effective adaptive noise cancellation
  • Lightweight and comfortable design


  • Rare connectivity drops
  • Call quality slightly unnatural
  • Earbuds can loosen during intense activity


With premium features like customized sound, adaptive noise cancellation, long battery life and a comfortable secure fit, the Soundcore A40 earbuds deliver outstanding value at their accessible price point. You’d have to spend considerably more to get incrementally better performance, making these earbuds a budget-friendly choice.

 Soundcore A40 Auto-Adjustable Wireless Earbuds


With outstanding battery life, great sound quality, and effective noise cancellation packed into a lightweight comfortable design, the Soundcore A40 earbuds represent an excellent value for noise cancelling wireless earbuds. The minor drawbacks like occasional connection drops don’t outweigh the many positives these affordable earbuds bring to the table. For their price point, the Soundcore A40 earbuds earn a strong recommendation.


  • Battery Life: Up to 10 hrs (earbuds), 40 hrs (with charging case)
  • Bluetooth Version: 5.2 with support for SBC, AAC
  • Wireless Charging: Yes (Qi compatible)
  • Noise Cancellation: Adaptive active noise cancellation
  • Waterproof Rating: IPX4 (sweat and splash resistant)
  • Weight: 5.6g per earbud, 52g charging case
  • Drivers: 6mm double-layer composite diaphragm drivers
  • Microphones: Dual mic per earbud (voice and ANC)
  • Connectivity: Bluetooth 5.2, Multipoint connection
  • Codecs: SBC, AAC, LDAC
  • App Support: Soundcore app for iOS and Android
  • Warranty: 18 months

What’s in the Box

The Soundcore A40 earbuds include:
- Soundcore A40 earbuds (left and right)
- Charging case
- XS/S/M/L/XL eartips
- USB-C charging cable
- Quick start guide and warranty information

How to Use

Using the Soundcore A40 earbuds:

  1. Choose the eartips that fit most comfortably and securely in your ears. The app has a fit test to help optimize this.

  2. Pair the earbuds with your phone or device via Bluetooth. The earbuds will power on when removed from the case.

  3. Use the touch controls to play/pause, skip tracks, adjust volume, activate noise cancellation or transparency modes, and summon voice assistants. Customize the controls in the Soundcore app.

  4. Place the earbuds back in the charging case to power off and recharge when not in use. The case provides an additional 40 hours of playtime.

  5. Download the Soundcore app to choose EQ presets, run HearID audio tests, setup smart features like auto play/pause, customize controls, and more.

Enjoy your new Soundcore A40 earbuds! Reach out to Soundcore customer support if any issues arise.

Soundcore A40 Auto-Adjustable Wireless Earbuds