Update. c900u setup into m10x
The c900u is a huge improvement over my 509x as a Pre. The best way I can describe the difference is ‘the sound is now free and simply just flows to let the music be the focus’.
I have not heard the c10x, but with my current setup I’m in no rush to change.
Huge thank you to Albert at precision audio and video in Chicago for setting me up with the new pre.