iFixit has long been the foremost authority on all things repairable (and not repairable) in consumer tech, but as authoritative as their ratings are, there’s one category that remained a blind spot: wireless headphones. Well, iFixit is headphone-blind no more. The arbiters of repairability are now diving into the over-ear audio category, and they just crowned a champion. According to their rankings, there’s one pair of wireless headphones that scores well  above the competition: the Fairbuds XL , which earned a perfect 10/10 in its rankings. If you’ve been paying attention to the repairable wireless headphones space, that shouldn’t come as a surprise. The whole point of the Fairbuds XL is that they let you swap everything. You can change out the ear cushions, the battery, the headband, and the speaker covers. Heck, you can even swap the drivers if you want to.…