Marantz SA8260 Filter Switch on Rear Panel

Has anyone who owns the Marantz SA8260 switched the filter on the back panel to "custom"? The owner's manual states that this should only be performed if one has a "next generation amp that supports SACD", otherwise possible amplifier or speaker damage may result. The switch is factory set to the "standard" position to filter very high frequencies at the player's output. Comparing the two settings would be worthwhile, but I am afraid of damage or overheating of amp/tweeters. I have a Placette Active Linestage, Plinius SA100 Mk2 and Dunlavy SC4a...John