The Beats Solo 4 is a refined version of the brand’s iconic on-ear wireless headphones, offering a balance of powerful bass, long battery life, and a lightweight design. The updated custom acoustic architecture and redesigned drivers aim to deliver the signature Beats sound, which is known for its deep bass and energetic tuning. One of the standout features is Personalized Spatial Audio with dynamic head tracking, adding a more immersive feel for music, movies, and gaming. Battery life is impressive, offering up to 50 hours of playback, making them a great choice for long trips or all-day use without frequent charging. A 10-minute Fast Fuel charge provides up to 5 hours of playback, which is convenient for quick top-ups. They also support high-resolution lossless audio via USB-C or a 3.5mm audio cable, giving those the option for wired listening with better sound quality compared to Bluetooth streaming.
Specs Table
Here is a detailed specs table for the Beats Solo 4 headphones:
| Specification | Details |
| Audio Technology | Custom Acoustic Architecture, Updated Drivers |
| Sound Features | Personalized Spatial Audio with Dynamic Head Tracking |
| Driver Size | Not Specified |
| Frequency Response | Not Specified |
| Bass Performance | Enhanced Bass Tuning |
| Connectivity | Bluetooth (Wireless) + USB-C & 3.5mm AUX (Wired) |
| Wireless Audio Codec | Not Specified |
| Lossless Audio | Yes (via USB-C or 3.5mm audio cable) |
| Noise Cancellation | No Active Noise Cancellation (ANC) |
| Microphone | Yes (Built-in for calls and voice assistant) |
| Voice Assistant Support | Yes (Siri, Google Assistant) |
| Controls | On-ear button controls for volume, playback, calls |
| Multipoint Connection | Not Specified |
| Battery Life | Up to 50 hours (Wireless mode) |
| Fast Charging | 10-minute charge = 5 hours playback |
| Charging Port | USB Type-C |
| Weight | Not Specified (Ultralight design) |
| Earcup Design | On-ear, Ergonomically Angled, Foldable |
| Headband Adjustment | Yes (Flex-Grip Adjustable Headband) |
| Cushioning | UltraPlush Ear Cushions for Comfort |
Sound Performance
I tested out the Beats Solo 4 with a variety of music genres to see how well these headphones performed (with a particular emphasis on the bass performance). Listening to Fleetwood Mac’s “Dreams”, the low-end was powerful and deep, giving the track a strong presence without muddying the mids. In Billie Eilish’s “Bad Guy”, the bass hit hard but remained controlled, making the song feel energetic without overpowering the vocals. With Daft Punk’s “Lose Yourself to Dance”, the bass groove was punchy and engaging, though I noticed that at higher volumes, the low-end became slightly dominant over the finer details of the mix. When switching to orchestral music like Hans Zimmer’s “Time”, the bass added warmth to the cellos and drums, but I felt that the soundstage wasn’t as wide as I’d like for classical or cinematic music.
Overall, I would say that the Beats Solo 4 have evolved from their bass-heavy predecessors to offer a more balanced and refined sound. The bass is still present but no longer dominates, allowing the mids and highs to shine through with clarity. Vocals and instruments are clear and detailed, providing a more natural listening experience and a more nuanced listening experience. Bass-heads will still love these headphones though, due to the emphasis on bass response and lower-end frequencies.
Design & Comfort
In terms of comfort and design, the Solo 4 is lighter than previous models, making them easier to wear for extended periods. The flex-grip headband feels more durable, and the ergonomically angled ear cups create a more secure and stable fit compared to older versions. The UltraPlush ear cushions add softness, though since they are on-ear headphones rather than over-ear, there is still some pressure on the ears after a few hours of use. That being said, the lighter build and improved clamping force make them more comfortable for long listening sessions than earlier Solo models. The foldable design makes them easy to store, and they remain one of the more travel-friendly wireless headphones in their category. The controls are intuitive, and switching between wireless and wired modes is seamless, giving flexibility depending on battery life or listening preferences.
The Verdict?
Overall, the Beats Solo 4 is a good bass-forward wireless headphone with great battery life, an improved fit, and the option for lossless wired listening. Compared to something like the Sony WH-XB910N, which also has enhanced bass and ANC, I think the Solo 4 is the better choice for those who prioritize a fun, energetic sound with a more compact design. The Bose QuietComfort 45 offers a more balanced and spacious soundstage with better noise cancellation, but for those who love deep bass and a portable form factor, the Solo 4 holds its own. If you listen to hip-hop, EDM, or modern pop, and want something lightweight with strong bass and long-lasting battery life, the Beats Solo 4 is a great option in 2025. If you prefer a more balanced, detailed sound for classical or studio work, there might be better choices, but for casual and bass-heavy listening, the Solo 4 delivers exactly what you’d expect from Beats—bold, powerful sound in a stylish and portable package.