getting NEMA to IEC adapters is a MUST for 'philes.
fans are good. so are freezers and refridgerators, they don't provide constant current draws and for no good reason I think fluctuating current is a better way to break in PCs as that is what they will experience 'on the job'.
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ICs and spkr wires, its nearly a must to have a secondary or even a third outfit to hang them on rather than to sap up tube life, or life in general off the main rig.
as such, I love HT receivers!!
there has been near constant talk on this subject here for decades. I'd do some searching on cable burn in and see those threads that mention dIY burn in units for IC and or speaker wires.
in fact I've always thought someone ought to build some and rent them out! or Charge for their use.
google it!!