The BOSE QuietComfort Ultra (2nd Gen) combines Bose’s most advanced ANC, precision-tuned drivers and personal-calibration software into a premium, comfortable over-ear design. The headphones use Bose Custom Tune to analyze fit and automatically adapt equalization and noise cancellation for optimal response at any volume. Active Sense (adaptive ANC) continuously monitors ambient sound and adjusts suppression across frequencies so speech, engines and high-frequency disturbances are reduced without sacrificing natural tonality. Key Features: Adaptive Active Noise Cancellation (ANC) — multi-band adaptive ANC that continuously adjusts to the environment. Custom Tune personalization — automatic fit and headphone calibration for consistent frequency response. USB-C lossless audio support — wired lossless playback option for higher-fidelity sources. Spatialized Bose Immersive Audio / Cinema mode — expanded soundstage for media. Advanced call/mic processing — multi-microphone array with AI background suppression for clearer calls. Comfort-first design — plush protein-leather ear cushions, foldable frame and protective case. App customization — ANC slider, EQ presets, firmware updates and case battery reporting via the Bose app.