My source is the Oppo 103 and I have tried it as a pre going into a Vincent SP-331. Ultimately I have things set up now using the 103 digital out into a Schiit Modi Multi DAC then to a Schiit Freya (the one with the tubes) then to the Vincent amp. Very pleased with the sound, but that's with my speakers, my choice of cables, and in my heavily treated dedicated listening room. As always, YMMV.
Tom
Tom