The EarFun Air Pro 4+ builds on the success of its predecessor, the EarFun Air Pro 4, which has long been considered one of the best value true wireless earbuds in the sub-$100 segment. With the Air Pro 4+, EarFun focuses on refining the sound quality while maintaining the strong feature set that made the previous model popular.
The updated model introduces a dual-driver system combining a 10mm dynamic driver with a balanced armature driver designed to enhance clarity and treble performance. At a retail price of around $99, the Air Pro 4+ aims to deliver a premium feature set—including high-resolution codec support, adaptive noise cancellation, and wireless charging—while remaining firmly in the budget category.
After spending time using the earbuds in everyday scenarios, we evaluated their design, performance, and overall value.
Design and Comfort
The Air Pro 4+ retains the familiar design language used across EarFun’s recent earbuds. The stem-style earbuds feature a simple matte finish with subtle branding and a lightweight construction. While the design does not differ significantly from earlier models, it remains functional and comfortable for daily use.
In practice, the earbuds sit securely in the ear without creating excessive pressure. EarFun includes five different sizes of silicone ear tips, making it easier to find a suitable fit for different ear shapes. The tips also provide good grip, helping the earbuds remain stable during movement.
During extended listening sessions, the Air Pro 4+ proved comfortable to wear for several hours at a time. The secure fit also makes them suitable for light workouts and casual running.
The earbuds carry an IP55 rating, offering protection against dust and sweat. This makes them a practical option for gym sessions or outdoor use.
Charging Case and Battery Life
Battery life remains one of the strongest aspects of the Air Pro 4+. With active noise cancellation enabled, the earbuds provide approximately 8 hours of playback, with a total of around 36 hours when combined with the charging case.
If ANC is disabled, the runtime can extend further, depending on the codec and listening volume. Fast charging is also supported, with a 10-minute charge providing roughly three hours of playback, which is convenient when you need a quick boost before heading out.
The charging case is compact and pocket-friendly, with a smooth rounded design. While the plastic construction does not feel particularly premium, it remains sturdy and functional. The case supports USB-C charging as well as wireless charging, a feature that is still uncommon at this price point.
Controls and App Features
The Air Pro 4+ uses touch controls on the earbuds, supporting single, double, and triple taps along with long-press gestures. These controls can be customized through the companion mobile app, allowing users to assign functions independently for the left and right earbuds.
The customization options are extensive. Users can adjust playback controls, noise control modes, and call functions directly within the app. Notably, the earbuds include a microphone mute option for calls, which can be assigned to a gesture.
The EarFun Audio app also provides additional functionality, including:
- A 10-band equalizer with presets and custom tuning
- Adjustable ANC and transparency levels
- Gaming mode for reduced latency
- In-ear detection settings
- Multipoint device management
- Hearing protection and balance controls
- A “Find My Earbuds” function
Overall, the software experience is well implemented and offers more customization than many competing earbuds in the same price range.
Connectivity and Codec Support
Connectivity is another area where the Air Pro 4+ stands out. The earbuds support Bluetooth 6.0, along with a wide range of audio codecs, including:
- AAC
- LDAC
- aptX Adaptive
- aptX Lossless
- LC3 (LE Audio)
Support for multipoint connectivity allows the earbuds to connect to two devices simultaneously. Switching between devices works smoothly, although playback must be paused on one device before starting on another.
The earbuds also support Auracast, which enables connection to compatible public broadcast audio streams such as conference systems or public displays.
Latency performance is good, particularly when gaming mode is enabled, making the earbuds suitable for video streaming and mobile gaming.
Call Quality
The Air Pro 4+ uses a six-microphone array with AI noise reduction to improve call clarity. In quiet environments, voice quality is clear and natural, with minimal compression.
In louder environments such as busy streets or crowded spaces, the microphones do a reasonable job of suppressing background noise. However, heavy wind or very loud surroundings can still affect voice clarity.
Overall, call performance is solid for everyday conversations and video calls, though some competing models offer slightly stronger microphone performance.
Active Noise Cancellation
The earbuds feature adaptive hybrid active noise cancellation, with several configurable modes available in the app.
In real-world use, the ANC performs well at reducing low-frequency sounds such as air conditioning, public transport rumble, or gym noise. EarFun also includes an adaptive mode that adjusts the cancellation strength based on the environment.
While the ANC is effective for the price range, it does not reach the performance levels of flagship earbuds from brands such as Sony or Bose. However, it remains competitive with other earbuds in the sub-$100 category.
Transparency Mode
The Air Pro 4+ includes two transparency modes designed to let outside sound pass through while listening to audio.
The default mode provides a balanced mix of ambient sound and music playback, allowing users to remain aware of their surroundings. The second mode slightly reduces the strength of the effect for a more natural presentation.
In practice, the transparency mode works adequately, though it introduces a moderate occlusion effect, where the user’s own voice sounds somewhat amplified or internal. Competing models such as the OnePlus Buds 4 deliver a more natural transparency experience.
Sound Quality
Sound quality is the most noticeable improvement over the previous generation. The addition of a balanced armature driver helps enhance treble clarity and overall detail.
The tuning delivers a balanced sound profile with slightly elevated bass and crisp highs. The bass response remains punchy and controlled, with good depth in the sub-bass frequencies. Kick drums and electronic bass lines have a satisfying impact without overpowering the rest of the mix.
The midrange is clear, with vocals presented naturally and instruments maintaining good separation. Lower mid frequencies are slightly emphasized, which helps male vocals sound fuller and more engaging.
Treble performance is where the Air Pro 4+ shows the most improvement. The balanced armature driver adds extra brightness and detail, creating a sense of openness and improved soundstage compared to the standard Air Pro 4.
At times, the treble can sound slightly sharp at higher volumes, but the included equalizer makes it easy to adjust the tuning to personal preference.
Overall, the earbuds deliver an engaging and detailed sound signature that performs well across a wide range of music genres.
Verdict
The EarFun Air Pro 4+ continues the brand’s strong reputation for delivering feature-rich wireless earbuds at an accessible price. While the design remains largely unchanged, the addition of a dual-driver system improves sound clarity and detail, making this model a worthwhile upgrade for users seeking better audio performance.
Combined with strong battery life, extensive codec support, multipoint connectivity, and wireless charging, the Air Pro 4+ offers a comprehensive feature set that is difficult to match in the sub-$100 category.
Although competitors such as the OnePlus Buds 4 may offer slightly better call quality and transparency mode performance, the Air Pro 4+ stands out for its audio tuning and overall versatility.
For users looking for a well-rounded pair of true wireless earbuds with strong sound quality and an extensive feature list, the EarFun Air Pro 4+ remains an excellent value.
