Solid State preamp Brands

If you don't need remote control, Klyne Audio makes good sounding and exquisitely built line stages stages, phono stages and preamps (built in phono).  That is pretty much all they make or have ever made.

It might help to know more about what you need, such as remote control, balance control, any other features and function, and price range.  It's been a while since I heard your candidates, but, I liked Ayre and I owned, and liked Coda.  However, I've heard stories that quality control has suffered just a bit at Ayre after the death of its founder.

Nagra makes some nice linestages that sound quite good and work well with solid state and tube amps.  You can even get them with transformer inputs and outputs.  I have tube gear with transformer inputs and outputs and I like the sound of a lot of iron in the path.  

I am a tube gear fan.  While I don’t think Ayre gear sounds particularly like tube gear, and their stuff is not tonally warm, I like their sound for some reason. 

jim2,

Wow! that is quite the collection of Ayre gear.  I like their linestage, amplifiers and integrated amps, never heard a bad one, but, I have not heard their DACs.  I don't mind the odd quirks, like the mechanical movement of their rotary stepped attenuators by remote control making clunking sounds; they apparently prefer this sort of switching to relay switching.