Introduction
Welcome to the Oneplus Buds Ace 2 True Wireless Earphones. These earphones are designed to provide a high-quality audio experience with advanced features such as Active Noise Cancellation (ANC), BassWave™ 2.0 technology, and a long-lasting battery. This manual will guide you through the setup, operation, and maintenance of your new earphones.
What's in the Box
- OnePlus Buds Ace 2 earbuds (1 pair)
- OnePlus Buds Ace 2 charging case (1)
- User guide & safety and warranty information (1)
- Silicon eartips (3 pairs: S, M, L)
- USB Type-C charging cable (1)
Specifications
| Feature | Detail |
|---|---|
| Model | E514A |
| Colorways | Harmonic Gray / Chromatic Blue |
| Earbud Dimensions | 29.99mm x 20.30mm x 23.87mm |
| Charging Case Dimensions | 66.60mm x 51.24mm x 24.83mm |
| Earbud Weight | 4.2g |
| Total Weight (Case & Earbuds) | 46.2g |
| Audio Drivers | 12.4mm Dynamic Driver |
| Driver Sensitivity | 112dB ± 3dB |
| Frequency Response | 20 Hz - 20,000 Hz |
| Microphones | 4 (2 per earbud) |
| Earbud Battery Capacity | 58 mAh |
| Charging Case Battery Capacity | 440 mAh |
| Playback (ANC off, 50% volume) | 12 hours (earbuds) / 43 hours (with charging case) |
| Playback (ANC on, 50% volume) | 8 hours (earbuds) / 28 hours (with charging case) |
| Quick Charge (ANC off, 50% volume) | 10 mins charge for 11 hours (earbuds + case) / 4 hours (earbuds) |
| Wired Charging Time (Earbuds) | Approx. 60 mins |
| Wired Charging Time (Earbuds + Case) | Approx. 80 mins |
| Noise Cancellation Modes | ANC on / ANC off / Transparency Mode |
| Clear Call Technology | AI noise cancellation calls |
| ANC Depth | Up to 32dB |
| Water & Sweat Resistance | IP55 (Earbuds) |
| Bluetooth® Version | Bluetooth® 5.4 |
| Supported Audio Formats | AAC, SBC |
| Wireless Range | 10 meters |
Note: Battery life and charging times are based on laboratory tests and may vary with usage conditions.
Setup
1. Initial Charging
Before first use, place both earbuds into the charging case and connect the case to a power source using the provided USB Type-C cable. Ensure the earbuds and case are fully charged for optimal performance. The indicator light on the case will show charging status.

2. Pairing with a Device
- Open the charging case with the earbuds inside.
- The indicator light on the case will flash white, indicating pairing mode.
- On your device (smartphone, tablet, etc.), go to Bluetooth settings and search for available devices.
- Select "Oneplus Buds Ace 2" from the list to connect.
- Once connected, the indicator light will turn solid white or green.

3. Fitting the Earbuds
Choose the silicon eartips (S, M, L) that provide the best seal and comfort for your ears. A good fit is crucial for optimal sound quality and Active Noise Cancellation performance.

Operating Instructions
Touch Controls
The Oneplus Buds Ace 2 feature touch-sensitive areas on each earbud for control. Specific gestures can be customized via the companion app (if available).
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double tap on the left earbud.
- Answer/End Call: Single tap on either earbud.
- Reject Call: Long press on either earbud.
- Switch Noise Cancellation Mode: Long press on either earbud (cycle through ANC On, ANC Off, Transparency Mode).
Noise Cancellation and Transparency Mode
The earbuds offer Active Noise Cancellation (ANC) up to 32dB to reduce ambient noise, and a Transparency Mode to allow you to hear your surroundings without removing the earbuds.


Making Calls
The earbuds feature 4 microphones (2 per earbud) and AI noise cancellation technology to ensure clear calls, even in noisy environments.

Maintenance
Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove eartips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Ensure charging contacts on both earbuds and case are free from dust and debris.
Water and Sweat Resistance
The earbuds are rated IP55 for water and sweat resistance. This means they are protected against limited dust ingress and low-pressure water jets from any direction. They are suitable for workouts and light rain, but should not be submerged in water or exposed to heavy rain.

Storage
When not in use, always store the earbuds in their charging case to protect them and keep them charged.
Troubleshooting
- Earbuds not pairing: Ensure both earbuds are in the case, open the lid, and check if the indicator light is flashing white. If not, try resetting the earbuds (refer to the full user guide for specific reset instructions).
- Only one earbud working: Place both earbuds back in the charging case, close the lid, wait a few seconds, then open it again. Re-pair if necessary.
- Poor sound quality: Check earbud fit and try different eartip sizes. Ensure earbuds and device are within the 10-meter wireless range. Clean any debris from the earbud grilles.
- Charging issues: Ensure the charging cable is securely connected to both the case and the power source. Clean the charging contacts on the earbuds and inside the case.
- ANC not effective: Ensure earbuds are properly seated in your ears to create a good seal.
User Tips
- For the best audio experience, experiment with the different eartip sizes to find the most comfortable and secure fit. A good seal significantly improves bass response and ANC performance.
- Regularly check for firmware updates via the official Oneplus app (if available) to ensure you have the latest features and performance enhancements.
- To maximize battery life, consider turning off Active Noise Cancellation when not needed, as it consumes more power.
Warranty and Support
Your Oneplus Buds Ace 2 earphones come with a standard manufacturer's warranty. Please refer to the included warranty card or visit the official Oneplus support website for detailed warranty terms and conditions. For technical assistance or further inquiries, please contact Oneplus customer support.





