Bose QuietComfort Ultra Headphones (2nd Gen): QCUH2-HEADPHONEARN · second-generation over-ear Ultra
Sony ULT WEAR (WH-ULT900N): WH-ULT900N (printed code YY2981) closed over-ear wireless headphones; Black, Off-White, Forest Gray. ULT FIELD speakers and the WH-1000X series are separate products.
| Specification | Bose QuietComfort Ultra Headphones (2nd Gen) | Sony ULT WEAR (WH-ULT900N) |
|---|---|---|
| Release year | 2025 | 2024 |
| Launch | Announced 10 September 2025; available from 2 October 2025 Bose | — |
| Noise control | Active noise cancellation; Quiet and ambient-sound Aware modes Bose | — |
| Wireless | Bluetooth 5.4; multipoint connection to two devices Bose | — |
| Digital audio | USB-C; 24-bit / 48 kHz lossless audio support Bose | — |
| Analog audio | 2.5 mm headphone input; included 3.5 mm–2.5 mm cable; headphones must be powered on Bose | — |
| Battery | Up to 30 hours with ANC on and immersive audio off; 23 hours with immersive audio; 45 hours with both off Bose | Music up to 30 hours ANC on, 50 hours off; calls up to 30 hours ANC on, 40 hours off; about 3.5 hours to charge over USB Sony |
| Charging | USB-C; up to 3 hours for a full charge; 15 minutes for up to 3 hours with ANC on Bose | — |
| Controls | Power/Bluetooth and multifunction buttons; touch volume strip; wear detection Bose | — |
| Weight and size | Headphones about 264 g; 4.5 × 16.0 × 20.5 cm Bose | — |
| In the box | Carry case; 3.5–2.5 mm audio cable; 1 m USB-C to USB-C cable Bose | Connection cable, USB cable, reference guide, warranty card Sony |
| Modes | Quiet, Aware, Immersion, Cinema; EQ and shortcuts in the Bose app Bose | — |
| Water resistance | No IP rating; avoid situations where the headphones may get wet Bose | — |
| PC calls | 8.2.20 and later: two-way PC audio over USB-C; app compatibility varies Bose | — |
| Software 10.12.12 | 8 September 2026: LE Audio beta on compatible Android/Windows devices and improved USB calls Bose | — |
| Noise cancelling | — | Digital active noise cancelling with Integrated Processor V1 and Dual Noise Sensor; Ambient Sound mode Sony |
| Driver and ULT button | — | 40 mm dome-type closed dynamic driver with neodymium magnet; ULT button for bass-heavy sound mode Sony |
| Frequency response | — | 5–20,000 Hz (JEITA, wired); 20–20,000 Hz over Bluetooth (44.1 kHz sampling) Sony |
| Bluetooth and codecs | — | Bluetooth 5.2; A2DP, AVRCP, HFP, HSP; SBC, AAC, LDAC; about 10 m range Sony |
| Multipoint and sensor | — | Two Bluetooth devices at once; wear sensor (pauses music when removed) Sony |
| Wired use | — | Detachable single-sided cable of about 1.2 m, gold-plated L-shaped 3.5 mm plug; passive operation supported Sony |
| Microphone and processing | — | Electret condenser, omnidirectional microphone; DSEE Sony |
| Impedance and sensitivity | — | 314 Ω on, 32 Ω off (1 kHz); 110 dB/mW on, 100 dB/mW off (wired) Sony |
| Weight and colours | — | About 255 g; Black, Off-White, Forest Gray Sony |
| Service program | — | Free repair until 31 January 2027 for cracks in the rotating shaft between headband and housing on specific serial numbers Sony |