Sony SCD-777es,standard or custom switch

Hello, does anybody have any info on using the custom setting? thanks, John
I used the custom setting with my setup - Levinson 38S and 331 preamp/amp combo with better results than the standard setting.
Custom setting all the way! Mine are all tubed and it does sound better (more upper air extension) at this setting. No problema. Do not let SOny's manual scare you!