Premium wireless earbuds keep promising better sound, but a high-quality recording is only one part of what you hear. The earbuds’ tuning and fit matter, too, as do outside noise and how long they last between charges.
Price: 1,199 Yuan ($179)
Where to Buy: Oppo China
OPPO is tackling several of those factors with the Enco X4. Its new earbuds combine a coaxial dual-driver system developed with Dynaudio, separate DACs for the two drivers, a claimed maximum wireless transmission rate of 2.3Mbps, adaptive noise cancellation, and up to 53 hours of playback with the charging case.
It is an ambitious specification sheet. The more useful question is which of those features will make a difference when you put the earbuds on.
Dual drivers and Dynaudio tuning
Each Enco X4 earbud pairs an 11mm bass driver with a 6mm high-frequency driver in a coaxial arrangement. Separate DACs drive the two sections, allowing OPPO to handle different frequency ranges independently. The published frequency-response range is 10Hz to 40kHz.
Dynaudio is involved in the tuning again. OPPO offers several sound profiles developed with the Danish audio company, along with EQ controls for listeners who want to adjust the balance themselves. That flexibility may be useful if you prefer more bass or want vocals to stand out.
None of this guarantees better sound than a simpler single-driver earbud. Multiple drivers and DACs give engineers more options, but tuning, fit, distortion, and personal preference still determine the result. Until the Enco X4 is independently tested, OPPO’s claims about improved detail and separation remain claims.
What 2.3Mbps means and doesn’t
The Enco X4’s headline audio figure is an advertised maximum transmission rate of 2.3Mbps using its LHDC Lossless mode. OPPO also advertises support for 48kHz/24-bit lossless audio, while the listed codecs include SBC, AAC, LHDC, and LC3. Bluetooth 6.1 and dual-device connectivity round out the wireless features.
The qualification is important: 2.3Mbps describes a supported maximum mode, not the rate you should expect with every phone. The available information does not establish which phones enable the full 2.3Mbps mode, so codec support alone should not be taken as a guarantee.
If lossless playback is your main reason for buying the Enco X4, check compatibility with your specific phone before ordering. Otherwise, the impressive number may have little bearing on your everyday listening.
Noise cancellation gets new hardware
OPPO has moved from the previous generation’s 12nm audio platform to a 6nm chip. The company says the change improves both full-range and voice-focused noise cancellation compared with the Enco X3. New foam-core silicone ear tips should help create a better seal, which can improve passive isolation before the electronic noise cancellation starts working.
The Enco X4 offers adaptive ANC alongside deep, moderate, and light cancellation settings and a transparency mode. Having those choices should make it easier to adjust the earbuds for a commute, an office, or a walk outside.
How much better the ANC actually performs remains an open question. OPPO’s comparison with the Enco X3 is not a substitute for testing how the earbuds handle voices, wind, engines, and other unpredictable sounds.
Translation and phone compatibility
OPPO says the Enco X4 supports real-time translation across 24 commonly used languages. Its feature list also includes spatial audio, quick voice commands, head-based controls, and stereo recording.
Phone compatibility matters for these features. OPPO’s ecosystem documentation notes that some earbud functions depend on the phone model and ColorOS version. The companion app is available for supported Android phones and iPhones, but OPPO does not clearly establish that every translation and ecosystem feature works identically across devices.
That distinction matters most if you want the Enco X4 for translation or ecosystem features rather than music playback and ANC alone.
The case for 53 hours
The specification you may notice most often is battery life. OPPO rates the Enco X4 for up to 13 hours from the earbuds and up to 53 hours including the charging case, but those maximums assume AAC playback with ANC turned off. With LHDC, the reported ratings fall to up to 10 hours from the earbuds and 42 hours with the case.
Your results will depend on your settings and listening habits. Still, even the lower LHDC figures suggest that endurance could be a stronger everyday selling point than the maximum transmission rate. Each earbud weighs about 5.6 grams, and the earbuds carry an IP55 dust- and water-resistance rating.
Price and the buying decision
The Enco X4 went on sale in China on September 24 at a suggested price of CNY 1,199, with a CNY 1,099 introductory offer. OPPO’s UK promotional terms also list a 30% Enco X4 coupon valid from October 21, though those terms do not specify a UK selling price or confirm a launch date.
That makes an immediate import less straightforward for buyers outside China. Waiting for local pricing and confirmed phone compatibility could be worthwhile, particularly if the 2.3Mbps mode or translation features are central to your decision.
Price: 1,199 Yuan ($179)
Where to Buy: Oppo China
The Enco X4 makes the strongest case for someone who wants long battery life, adjustable ANC, and flexible sound settings, and whose phone supports the features they plan to use. Whether its dual drivers and upgraded processing deliver a meaningful improvement over rival earbuds will take hands-on testing to answer.
