Sonos has rolled out a significant software update for its Ace wireless headphones, delivering several highly anticipated features that enhance the home theater audio experience. The update, which became available globally on June 10, 2025, addresses long-standing user requests and brings capabilities that were originally promised during the headphones' 2024 launch.
TrueCinema Mode Finally Arrives
The most notable addition is TrueCinema mode, a feature that was initially scheduled for release in late 2024 but faced delays. This technology adapts spatial audio to your specific listening environment, creating a more convincing virtual surround sound experience. The system works by having a Sonos soundbar measure the room's acoustics while the Ace headphones' built-in microphones determine your exact position within that space. This dual-measurement approach allows the headphones to simulate having a complete 3D sound system positioned around you, delivering theater-quality audio directly to your ears.
TrueCinema Technology
- Soundbar measures room acoustics
- Headphone microphones determine user position
- Creates virtual 3D surround sound experience
- Similar to Sonos TruePlay speaker optimization technology
Enhanced TV Audio Swap Supports Two Users
Sonos has significantly expanded its TV Audio Swap feature, which allows users to redirect audio from compatible soundbars to their headphones for private listening. Previously limited to single-user experiences with the Arc soundbar and requiring iOS devices, the feature now supports simultaneous connection of two Ace headphones. This means couples or friends can watch television together through their individual headphones without disturbing others in the household. The compatibility has also been extended beyond the premium Arc model to include the more affordable Beam and Ray soundbars, with full Android device support.
TV Audio Swap Compatibility
- Original: Sonos Arc soundbar only, iOS devices required
- Current: Arc, Beam, and Ray soundbars supported
- Platform support: iOS and Android devices
- New capability: Simultaneous connection of two Ace headphones
Improved Active Noise Cancellation
The update brings substantial improvements to the headphones' active noise cancellation system. The enhanced ANC now adapts in real-time to compensate for sound leakage caused by hair, glasses, or hats that might prevent the headphones from creating a perfect acoustic seal around your ears. This adaptive approach ensures consistent noise isolation regardless of how accessories or personal characteristics might affect the fit.
Better Call Quality and Natural Sound
Phone call functionality receives a significant boost with the introduction of high-resolution audio during conversations. Additionally, a new SideTone feature addresses a common issue with noise-canceling headphones during calls. When ANC is active, users often feel disconnected from their own voice, making conversations feel unnatural. SideTone solves this by mixing a small amount of the user's voice back into the audio feed, creating a more comfortable and natural calling experience.
Key Features Added in Update
- TrueCinema mode for adaptive spatial audio
- Dual listening support for TV Audio Swap
- Real-time adaptive active noise cancellation
- High-resolution audio for phone calls
- SideTone feature for natural call experience
Focus on Long-Term Value
According to Dana Krieger, Sonos' vice president of design, the Ace headphones were intentionally designed to deliver lasting value through both form and function. The company has emphasized the headphones' replaceable earcups, allowing users to maintain their investment over time by swapping out worn or damaged components rather than replacing the entire unit.
