I’ve got a pair of Edifier Bluetooth earphones, and I’ve got more than one music player. I recently started exercising again, so I dug the earphones out and started pairing them up… and now the question is: should the Bluetooth earphones go with the Walkman A35, or the FiiO X7? First off, worth mentioning: the FiiO X7 added aptX Bluetooth audio support through a later firmware update — you can see the aptX label up top. The Walkman A35 only supports Sony’s own LDAC.