Premium wireless headphones often fail first from battery aging and physical wear rather than speaker drivers. For QuietComfort Ultra, watch for reduced ANC performance from worn pads (seal matters, battery decline, and intermittent charging/firmware connectivity issues.
If comfort and isolation degrade, pad replacement is an inexpensive repair that can restore performance without approaching the threshold. If the headset has structural damage or persistent electronic dropouts, service can be expensive and outcomes less predictable.
Use the threshold to decide whether a major board or battery service is worth it, especially when sales lower replacement cost. Price reflects a common retail price point for QC Ultra headphones; major retailer promotions can reduce the effective replacement cost and shift borderline repair decisions toward 'replace'.