Any real experiences with a Luxman C900u and C10x?

For speakers Sonus Faber, DynAudio, and Magico. 

I have heard the C-900u, and a variety of the L-509X lines. Also the M-900u and M-10X. They all have a very distinct sound signature that are very similar with increasingly lower noise floor and more dynamic presentation. If you really like the Luxman presentation, you can be sure buying the higher tier model will sound better. 

I prefer more balanced and musical presentation. If this interests you at all,  I would recommend looking at an Audio Research, Conrad Johnson or VAC preamps if what I am saying appeals to you. These are more musical and natural. The best place to start to get a musical presentation into your system is through a warmer and more natural preamp. 

If you do not have much of a choice in dealers. Then consider a trip to go listening to some other equipment. Just to verify you are on the right track. On a Saturday or Sunday I have been known to drive a couple hundred  miles to an appointment or two at a distant high end store for some auditioning. On business trips, across the country after work is done. 

Thank you @ghdprentice.  I definitely have a liking to the luxman sound signature.  I have a 509x which i'm using as a preamp and phono amp.

With my new M-10x and to get the most out of it I want to a dedicated preamp and phono amp (looking at the Chord Symphonic or Luxman EQ-500).  

The EQ-500 has been discontinued, so you will likely have to look at the used market to get one.

I am a bit of a contrarian in this site when it comes to preamps. I do not want warmth, or anything added from a preamp. That is why I was not a fan of the c900u preamp.

My ideal preamp does not add anything to the sound. My Benchmark HPA4 does not add anything. I have it paired with a Sanders Magtech, but I am thinking of getting my CODA #16 hooked up to it for my office system

My other preamp, Holo Audio Serene, is almost like the LA4 | HPA4 except for being a tiny bit warm. I have this paired with the CODA #16 amp which I think is similar to the M10x. The CODA #16 maybe a bit warmer. I did not listen long enough with the M10x to know for sure.

I recently heard the M10x and the different sounding SimAudio 761. I am trying to decide which one of the 2 to get, but I know which 2 preamps I will use.

I actually had that exact combination. I came from a Luxman integrated so probably same sound signature but it was definitely an improvement as you would expect.

I wanted to use one line stage / preamp for both my tube amp ( 300b PSet) and the Luxman M10X. 

I have an Aric Audio Motherload preamp using some “BAD BOY” NOS 6SN7. That I compared with the C900 and I would not call it better but just a little more laid back as you would expect.

Anyway I ended up keeping the tube preamp.

I can now go between the M10X and the Aric Audio to change the sound from a more detailed sound to a hard-hitting sound and a laid-back sound of the 300b.

I would say using the c900 just gave it a little more detailed sound. I would imagine it would be hard to find a better solid state preamp to match with the M10X (except maybe new c10x). The prices of the c900 are really good now and if I totally separated my systems I would go back to it.

Focal Sopra #3 speakers for now.