Lumin Streamer as Preamp

Hey all,

Has anyone used their Lumin streamer (any model) as a preamp?  Apparently, you can adjust the output settings to use it to directly feed an amplifier.  

In one had, I see the possible benefits of one less item in chain and the associated connections, etc.  On the other hand, it's unknown ground for me. 

Any experiences or thoughts would be appreciated. 

Thanks!