Premium earbuds need to get several things right beyond just delivering great audio. Good noise cancellation, crisp call quality, a comfortable fit, and practical everyday features all matter when you're spending this much. At ₹19,999, the Oppo Enco X4 packs quite a punch on paper, with Dynaudio-tuned dual drivers, LHDC lossless audio, adaptive ANC, and a host of AI-powered additions. These include live translation, hands-free Google Gemini access, and the ability to use the earbuds as external microphones with compatible Oppo phones. But can they stand out in an increasingly crowded flagship earbuds market?
The Oppo Enco X4 keeps things understated rather than going for an attention-grabbing design, but there are enough little details to give it a premium feel. The charging case mixes matte and glossy finishes, complemented by a star-shaped ring accent and Dynaudio branding. The metallic-style edges add to the overall look, making the package feel a step above your usual pair of wireless earbuds. We received the Glacier White variant for this review, although Aurora Violet is also available in select markets.
At 5.6 grams per earbud, the Enco X4 is light enough to wear throughout the day. Oppo puts the combined weight of the case and earbuds at 50.9 grams, so carrying them around shouldn't be a hassle either. Comfort, however, depends just as much on the fit as it does on weight.
Oppo has paid particular attention to the silicone ear tips, developing their redesigned shape using insights from more than 2,800 ear-canal scans. The foamed silicone material takes inspiration from sound-insulating technology used in high-speed trains, with the goal of easing pressure and fitting a wider variety of ears. Four tip sizes are included, making it easier to find a comfortable seal. That's important not just for a secure fit, but also for getting the best out of the active noise cancellation.
The IP55 rating adds another practical advantage, offering protection against dust and water splashes during workouts or daily commutes. Just remember that this protection applies to the earbuds, not the charging case.
Audio is clearly one of the biggest selling points of the Oppo Enco X4, and the hardware suggests Oppo means business. Each earbud features an 11mm TRF-diaphragm woofer paired with a 6mm planar-diaphragm tweeter, handling bass and treble separately. Oppo claims the new woofer offers 67% greater low-frequency driving power than the one used in the Enco X3, promising a more powerful foundation for your music.
There's more going on under the hood. Both drivers get their own dedicated DAC, giving each earbud two DACs in total. Oppo has also extended its collaboration with Dynaudio into its sixth year, introducing five sound profiles designed for different listening preferences. You can opt for a balanced presentation, clearer vocals, brighter highs, punchier bass, or a high-resolution profile that focuses on finer details.
Prefer to fine-tune things yourself? The built-in 10-band equaliser gives you plenty of room to experiment with frequencies. You can also import and share custom sound profiles, which is a nice addition for anyone who likes having greater control over their audio.
The Enco X4 also brings lossless wireless audio to an Oppo TWS product for the first time. Its LHDC Lossless support allows transmission at up to 2.3Mbps, with 24-bit/48kHz playback, alongside Hi-Res Audio Wireless certification. There's a catch, though: you'll need a compatible Oppo Find X-series smartphone, enable the feature, and use suitable lossless music files.
Spatial Audio adds another layer, offering Off, Fixed, and Head Tracking modes. The latter adjusts the perceived sound direction as you move your head, creating a more immersive experience with compatible content.
The Oppo Enco X4 is designed to keep unwanted noise at bay, and its noise-cancellation setup gets a substantial hardware and software upgrade. It combines newly developed ear tips with three microphones, a 6nm NPU, and AI-powered processing. Oppo claims the ANC performance is twice as effective as the Enco X3, with speech-frequency noise reduction improving by 30%.
The adaptive mode is built to respond to your surroundings, whether you're travelling on the metro, walking beside busy traffic, or sitting inside a cab or aeroplane. It adjusts the level of isolation automatically, while three manual intensity settings let you decide how much ambient sound you want to block.
Conversation Awareness is another useful addition. When the earbuds detect that you're speaking, they lower the music volume and activate maximum transparency, making it easier to talk without removing them. Once the conversation ends, your previous listening settings kick back in.
For calls, Oppo's Clear Call technology uses the three microphones, a dedicated voice-pickup unit, and the onboard NPU to filter background sounds and prioritise your voice. The idea is to make conversations easier to follow even in noisy environments. However, how well it handles blaring traffic, gusty winds, or several people talking nearby is what will really determine its effectiveness during everyday use.
The Oppo Enco X4 offers plenty of flexibility if you regularly switch between multiple devices. Bluetooth 6.1 and dual-device connectivity allow the earbuds to remain paired with two devices at once, making it easy to jump between your smartphone and laptop without having to reconnect every time. They work with Android, iOS, and Windows devices, while compatible Oppo and OnePlus smartphones get additional Smart Bluetooth features. Oppo claims a connection range of up to 400 metres outdoors and around 100 square metres indoors, though actual performance will depend on obstacles and interference. You can manage the available settings through the HeyMelody app.
Everyday controls are fairly versatile, with customisable taps and swipes for managing playback and volume. Spotify Tap is also supported, providing quick access to personalised music suggestions without needing to unlock your phone. On compatible Oppo devices, double-tap gestures can trigger the camera shutter or start video recording. You can even use head movements to answer or reject incoming calls.
Content creators get a particularly interesting addition in Clear Audio Recording. This feature turns the earbuds into an external microphone when paired with supported Oppo Find X-series phones. Dolby processing, binaural transmission, and AI-based noise reduction aim to retain stereo sound positioning while cutting down unwanted noise. For the intended experience, Oppo recommends using a Find X10-series device or newer.
The smart features extend to AI Live Translation, too. On select Oppo and OnePlus phones running ColorOS 17 or later, translated audio plays through the earbuds while the corresponding text appears on the phone. It's potentially handy for meetings, lectures, and conversations across languages. Google Gemini is also accessible through voice commands or touch gestures, giving you a way to access AI assistance without constantly reaching for your phone.
The Oppo Enco X4 has a few tricks up its sleeve beyond the usual audio features. Neck Health is one such addition, using the earbuds’ sensors to monitor posture, assess neck movement, spot possible signs of fatigue, and recommend exercises. You’ll need a compatible Oppo or OnePlus phone to use it, and while it could be useful for everyday awareness, it shouldn’t be considered a replacement for medical guidance.
The earbuds also offer sleep detection, automatically pausing music when you doze off. It’s a handy touch if you often fall asleep with your favourite tracks playing, although the feature doesn’t currently extend to video apps.
Then there’s Sound Space, which brings together ambient soundscapes inspired by settings such as beaches, forests, and Zen temples. Whether you want to relax or block out distractions while working, these sounds can help set the mood. You can launch the feature using a triple-pinch gesture on supported Oppo and OnePlus phones or through the HeyMelody app on Android and iOS.
Battery endurance is a definite plus for the Oppo Enco X4. During my testing, the earbuds lasted about 13 hours on a charge, with the case extending total listening time to roughly 52 hours. Turning on ANC made a noticeable difference, bringing these figures down to around six hours for the buds and 26 hours with the case.
Oppo advertises up to 53 hours of combined playback, but that figure comes with ANC disabled, AAC audio, and the volume set to 50%. Your mileage will vary depending on how loudly you listen, which codec you use, and whether features such as noise cancellation stay active.
Inside, the charging case houses a 576mAh battery, while each earbud gets a 65mAh cell. A wired charge takes approximately 55 minutes for the earbuds alone, or 65 minutes for the complete setup. Wireless charging, where supported, takes around 150 minutes. In a hurry, a 10-minute top-up can reportedly deliver up to 14 hours of playback with the case under Oppo's specified test conditions.
At ₹19,999, the Oppo Enco X4 faces stiff competition, so a decent pair of drivers and effective ANC alone wouldn't cut it. Thankfully, there's more to these earbuds than the basics. The dual-driver setup, dedicated DACs, Dynaudio tuning options, 10-band EQ, LHDC lossless audio, and Spatial Audio make them a compelling pick for anyone who likes fine-tuning their listening experience.
There's a healthy mix of practical extras, too, including adaptive noise cancellation, clearer calls, Bluetooth 6.1, dual-device connectivity, live translation, Google Gemini integration, and generous battery life with ANC disabled.
The biggest catch is how much the experience depends on your phone. Several headline features are reserved for compatible Oppo and OnePlus devices, leaving iPhone users and owners of other Android phones with a less complete package. Battery endurance also takes a noticeable hit when ANC is active.
If you're already invested in Oppo or OnePlus, the Enco X4 is worth considering. For everyone else, its premium price deserves a little more thought.