Yes Yogiboy - the AMC CVT3030 is an EL34 output section with a mosfet preamp section...pretty nice int amp.
I 2nd the other who prefer a tube preamp and SS amp. I ran a couple of B&K amps (ST-140 & EX442 Sonata) with a tube preamp (Music Reference RM5mkII) for many years and it was superb. Those B&K's are some of the tubiest sounding SS amps around and a great value for the money. I like the earlier stuff from B&K, nothing after the Sonata though...
Besides the AMC CVT3030, I really haven't heard a SS pre/tube amp combo; however, I suppose if you have a very lushious sweet tube amp, a SS preamp might tame it a bit....
But for me, if I had a tube amp, I'd would just mate it with a tube preamp - as I had previously for many years...for me - tubes rule and always will.