New Pro - Non sound quality observations

[Confused]

Confused is everything (except vinyl) routed through the Mutec3+ USB? Did you test your CD-player via that route?

No, the CD is connected direct to the Devialet.  Having said that, you have successfully predicated my thoughts and future plans.  The Mutec is a little limited in terms of connectivity.  It has a USB input, an optical Toslink input, and an S/PDIF input with a BNC type connector.  Currently my TV is running through the W4S reclocker via optical, to Mutec via optical.  The Blu-Ray player is a transport only (no DAC) and very unusually will output hi res PCM at 24/88.2 playing SACD, this is now fed S/PDIF to the W4S reclocker, then to the Mutec.  I could have used this connection route for the CD player, but my logic was that the CD player gets used less than the Blu-Ray player.  It is a case of CD's being ripped / streamed, and the only time the CD player gets used is maybe to play something recently purchased or maybe a CD loaned by someone.  However, the spare BNC S/PDIF input on the Mutec remains.  I need to double check this, but I'm thinking that all I need is a RCA to BNC S/PDIF cable (or adaptor), and the CD player can be connected direct to the Mutec.  This might be interesting, I recall Guillaume posting some information a while back about the superiority of CD players versus streaming.  So having the CD player via the Mutec would allow a direct head to head test with the microRendu.  This might be interesting!   In the short term I am not planning to A/B test anything, the amp is brand new, so I plan just to enjoy the thing for a few weeks whilst the electronics settle down, and more importantly, my ears and brain get used to it.  Lots of potential here for future fun and experimenting!