There is nothing to be gained running the analogue outputs into the G68. If you have an analogue pre-amp then potentially there is some benefit to using the analogue for 192KHz but I would expect it to be one of preference rather than superiority.

Mark
G68, baby Genelecs, Humax Foxsat, Oppo+Vanity93, Toshiba HD-A35, Pioneer CLD-925 + Meridian 519, various other random bits and bobs
Got a black G08.2 you want to sell?