Is the STAX SR-Lambda Pro worth the upgrade from the Bose QuietComfort Ultra Headphones?
Verdict
Downgrade
The STAX SR-Lambda Pro actually scores 5.0 points below the Bose QuietComfort Ultra Headphones, so on aggregate review consensus this is a step backwards. The gains are concentrated in sound (7.0 to 8.5) and value (6.5 to 7.0). Worth checking: active noise cancelling goes Yes to No and weight goes 254 g to 340 g. It is at least $99 cheaper, so the lower score comes with a saving. Only worth it if a specific feature above matters more to you than overall quality does.
What actually changes
Sub-scores both products have, on the same 0-10 scale. Bars extend right for a gain, left for a loss.
- Sound7.08.5
- Value6.57.0
Spec differences
Only where the two genuinely differ - everything they share is omitted.
| Spec | QuietComfort Ultra Headphones | SR-Lambda Pro | Direction |
|---|---|---|---|
| Active noise cancelling | Yes | No | |
| Weight | 254 g | 340 g | |
| Multipoint pairing | Yes | No | |
| Transparency mode | Yes | No | |
| Companion app | Yes | No | |
| Custom EQ | Yes | No | |
| Wear detection | Yes | No | |
| USB-C | Yes | No | |
| ANC type | adaptive | none | |
| Controls | both | none | |
| Driver | dynamic | Electrostatic | |
| Frequency response | 20 Hz - 20 kHz | 8 Hz - 35 kHz |
About this verdict
Direction matters here: this page answers "QuietComfort Ultra Headphones to SR-Lambda Pro". The other direction is a separate question with a different answer. Scores blend published review verdicts across over-ear and shift as new reviews land, so a marginal call today may not be one next quarter.