I suggest some audiophile polarizing filters to clean up the noisy sun light. You simply wear them while listening - the best are the “RayBand” with polarized lenses. ;-)
More seriously, if you have in spec power and good components then they should have well designed power supplies and will work without special conditioning.
More seriously, if you have in spec power and good components then they should have well designed power supplies and will work without special conditioning.