I agree with @roberjerman - speakers do need to break-in due to the mechanical operation of the drivers. Electronics and wire, not so much except maybe a little time for capacitors. Wire and other components should simply need to warm up to operating temperature. This business of hearing momentous sonic changes for weeks on end as wire burns-in seems far-fetched to me. The thought that burning-in cables by playing a certain type of music will result in the cables being better suited to that type of music is beyond far-fetched. But hey, give it a whirl and report back.
If you really want to burn-in your cables, get a Cable Cooker. I own one and used it mostly when I constructed new cables. I honestly cannot say I ever heard a difference but I purchased it because I didn't want the absence of burn-in to be a potential factor affecting my evaluation of recently constructed cables when compared with my existing cables.
If you really want to burn-in your cables, get a Cable Cooker. I own one and used it mostly when I constructed new cables. I honestly cannot say I ever heard a difference but I purchased it because I didn't want the absence of burn-in to be a potential factor affecting my evaluation of recently constructed cables when compared with my existing cables.