C12000 Owners! Help. Tube vs Solid State Question

Im going to AB against my C2600 soon. Ill let you know…

I’m afraid I can’t bring any insight, but I’d be interested in hear more of your impressions of the c12000. I have a c2300 and considered an upgrade.

Hi russ69,

Thanks for replying.  A little more information.  When I compare between tube and solid state using the main out RCA, (the only output that allows the automatic switching), I can hear zero sonic difference between the tube and solid state.  Its almost as if no switching between preamps actually occurs.
 

I understand the difference isnt dramatic as this preamp is so quiet, but I expect to hear something.  In contrast when I listen between the solid state and tube preamps by manually switching between the XLR inputs then I can hear a sonic difference.  The tube has a broader deeper sound stage but less detail with percussion.   Solid state is detailed, fast but with less soundstage.  
 

I am using Audioquest Columbia interconnects both XLR and RCA. I am only comparing XLR settings against XLR and RCA vs RCA so dB difference doesnt factor. I am only comparing details.  
 

Have you or has anyone had a similar experience with their C12000? Besides this issue its a wonderful preamp  

Thanks!

Most likely you are hearing the difference in your cabling or the 3db difference between RCA and balanced outputs.