@hjdca thanks for your response. Yes, I do like the many options the mp1100 offers. I have a terrible memory, but I do believe Ive read somewhere the mp1100 phono on its own is better than the ones found integrated in the preamps - but not including the top of the line ones (ex: c1100 or I guess today would be the c12000), I have no clue how it compares to those.
I would surely hope its not equivalent to a c2800, or else it would be best maybe to sell my current pre-amp and just get that preamp with phono.
Also , changing those tubes, what difference did you find in the sound? thanks again