Over Tubing it?

Way too broad of an idea. There is no such thing as too many tubes or too much solid state, you pick equipment that works with your system, design has little to do with this.

I own the best system I have heard (to me, and I luckily accidentally have an exceptional room). All my components are high end tube (~36 in total), Reference Audio Research with the exception of my streamer (Aurender W20SE). No question that there is no such thing in a high end system as “too many” tubes. In high end systems they don’t sound like tubes… they are used to enable incredibly natural musical high fidelity sound.

An all ARC tube system might sound too solid state for those who want romanticism..

I am wondering folks opinions on whether one can "over tube it"

This question comes up once or twice a year.  IMO, The question itself comes from those who have read all the erroneous claims about tubes. IE "Tubes are slow." "Tubes don't have good bass" and on and on. The so called lack of good  bass kept me from tubes for a good period. Then I tried them myself and...WOW!  I shudder to think of going back to SS. I'm sure there are some good ones but I don't have the $$$ to try and find them

So considering all the misinformation about tubes,  its little wonder that the question is asked. But it comes from a view that believes tubes to be inferior to SS. I have not found that to be true. Unlike @ghdprentice , I only have 9 tubes in amp & preamp. But I would not hesitate to put a tubed Dac in the system. It all comes down to good implementation whether it be tube or SS.

Thanks a lot for all of your thoughts on this.  Very helpful.  I am re-committing to the tube DAC for a while and just placed an order for some tubes from Brent Jesse.  I am interested in what rolling in other tubes will bring to or detract from my system.  

Cheers!