Bose built its reputation on noise cancellation, and the QuietComfort Ultra represents the company’s strongest effort yet. With Immersive Audio and updated ANC algorithms, the QC Ultra targets the Sony WH-1000XM5 directly. After extensive testing, here is how it performs.

Bose QuietComfort Ultra Review: The ANC Champion

Design

The QC Ultra maintains Bose’s recognizable design language with plush protein leather ear cushions and a padded headband. At 250 grams, it matches the Sony XM5. The ear cups tilt flat for storage in the included case. Physical buttons handle ANC modes while a capacitive strip on the right ear cup manages playback and volume.

Build quality is solid but relies heavily on plastic. The hinge mechanism feels durable. The materials are comfortable from the first wear without a break-in period.

Noise Cancellation

This is where Bose justifies its premium. The QC Ultra’s ANC handles low-frequency noise (airplane engines, HVAC rumble, train vibration) more aggressively than any competitor including the Sony XM5. The silence is striking. Mid-frequency reduction (office chatter, keyboard typing) is also excellent.

CustomTune analyzes your ear canal shape on each wear to optimize both ANC and audio EQ. The result is consistent performance regardless of ear tip fit variations.

Compared to the [INTERNAL: sony-wh1000xm5-review], the Bose wins in raw noise cancellation depth while Sony wins in overall sound quality and smart features.

Sound Quality

Bose’s tuning is warm and consumer-friendly. Bass is emphasized with a full, rounded low end that most listeners find pleasing. Midrange is smooth but slightly veiled compared to the Sony XM5 or Sennheiser Momentum 4. Treble is polite, avoiding harshness but sacrificing some sparkle and air.

Immersive Audio is Bose’s spatial audio implementation. With compatible content, it places sound in a wider field around your head. It works better for podcasts and film than for music, where the processing can make instruments sound diffuse.

Specification	QC Ultra	Sony XM5
Weight	250g	250g
ANC Performance	10/10	9.5/10
Sound Quality	8/10	9/10
Battery Life	24 hours	30 hours
Price	~$379	~$350
Codecs	SBC, AAC, aptX Adaptive	SBC, AAC, LDAC

Battery and Connectivity

24 hours with ANC active is adequate but trails Sony’s 30 hours. Quick charge provides 2.5 hours from a 15-minute charge. Bluetooth 5.3 with multipoint connection works with two devices simultaneously.

The absence of LDAC codec support is notable. Bose supports aptX Adaptive instead, which works only with Qualcomm-based Android phones. iPhone users are limited to AAC.

Comfort

The protein leather ear cushions are plush and conform well to face shapes. Clamping force is lighter than the Sony XM5, which makes the Bose more comfortable for glasses wearers but slightly less secure during active movement.

Who Should Buy the QC Ultra

Frequent flyers and office workers who prioritize maximum noise cancellation above all else. If eliminating ambient noise is your primary goal, nothing beats the Bose QC Ultra.

Buy if: You want the absolute best ANC and a warm, comfortable sound. Skip if: You prioritize audio fidelity, need LDAC support, or want longer battery life.

Key Takeaways

ANC performance is the best available in any consumer headphone
Sound is warm and consumer-friendly but not audiophile-grade
Battery life at 24 hours lags behind Sony and Sennheiser
No LDAC support limits high-resolution wireless audio on many devices

Next Steps

Compare this against the competition in our [INTERNAL: best-noise-canceling-headphones-2025] roundup. For better sound quality in a wireless ANC package, see our [INTERNAL: sony-wh1000xm5-review].