Sony WH-1000XM5 vs Bose QC45

Noise cancellation is the most heavily weighted criterion because it is the primary reason buyers choose these headphones over standard models. Both the Sony and Bose offer active noise cancellation, but the technology and effectiveness differ meaningfully.

The Sony WH-1000XM5 scores 9/10. It uses eight microphones, four on each ear cup, paired with two noise cancelling processors (the Integrated Processor V1 and the HD Noise Cancelling Processor QN1). This dual-processor approach analyses ambient sound at more points and adjusts the anti-noise signal more precisely. The Auto NC Optimiser feature calibrates the cancellation to your ear shape, whether you are wearing glasses and your current environment. In practice, the Sony blocks low-frequency rumble from aircraft engines and train carriages more effectively than any other headphone in this price range.

The Bose QC45 scores 8/10. Bose pioneered consumer noise cancellation and the QC45 remains very effective, particularly against consistent background noise like office air conditioning. However, it uses six microphones compared to Sony's eight and lacks the dual-processor architecture. The QC45 also offers only two noise cancellation modes (on and off with awareness) whereas the Sony provides granular control through its app, allowing you to set the cancellation level anywhere from minimal to maximum.

Sound quality is rated critical because headphones at this price point should deliver audio performance that justifies the investment over cheaper alternatives.

The Sony WH-1000XM5 scores 9/10. The 30mm carbon fibre composite driver unit produces a balanced sound signature with controlled bass, clear vocals and detailed treble. The key differentiator is LDAC Bluetooth codec support, which can transmit audio at up to 990 kbps. This is roughly three times the bitrate of standard SBC (328 kbps) and meaningfully higher than AAC (256 kbps). On compatible Android devices, the difference is audible in complex tracks with layered instruments. Sony's DSEE Extreme feature also upscales compressed audio files using AI, which improves the listening experience with streaming services that use lossy compression.

The Bose QC45 scores 7/10. The 35mm drivers produce a warm, pleasant sound with emphasised bass that many listeners enjoy for casual listening. However, the QC45 lacks support for any high-resolution Bluetooth codec. It is limited to SBC and AAC, which constrains audio detail regardless of the source material quality. The companion app offers basic EQ adjustment but with fewer options than Sony's Headphones Connect app.

The Bose QC45 scores 9/10 for comfort, which is the one category where it clearly surpasses the Sony. At 240 grams, the Bose is 10 grams lighter. The ear cups are slightly larger, accommodating a wider range of ear sizes without pressure on the outer ear. The headband padding distributes weight effectively across the top of the head. Bose has refined this comfort-focused design over two decades and the QC45 benefits from that accumulated expertise.

The Sony WH-1000XM5 scores 8/10. Sony redesigned the headband for the XM5, making it thinner and more evenly weighted. The ear cushions use soft synthetic leather with adequate padding. Most users will find the Sony comfortable for sessions of four to six hours. However, for eight-plus hour days at a desk, some users report that the slightly firmer clamping force and heavier weight become noticeable compared to the Bose.

The Sony WH-1000XM5 scores 9/10 for battery life with 30 hours of playback with noise cancellation enabled. The three-minute quick charge that provides three hours of playback is the fastest in this class. For features, the Sony also scores 9/10 thanks to speak-to-chat (which pauses music when you talk), adaptive sound control (which learns your locations and adjusts settings automatically) and comprehensive EQ and sound customisation through the Headphones Connect app.

The Bose QC45 scores 7/10 for battery life with 24 hours on a full charge. Its 15-minute quick charge provides 2.5 hours, which is useful but slower than Sony's three-minute option. For features, the QC45 scores 7/10. It offers awareness mode and basic EQ through the Bose Music app but lacks Sony's speak-to-chat, adaptive sound control and detailed customisation options.