looking pre tube for mc452

hi, im searching pre tube for my mc452
is conrad johnson et3 or AR good match ?

A McIntosh tube preamp is the best match IMHO.  You have an awesome amp there...enjoy! 
hi yes i have sold c2300.
i want to try another. Conrad Johnson ? 
SS McIntosh preamps have a more full bodied sound compared to the Mc tube preamps if that is what you are after. 
Did you roll the tubes in your C2300 or did you use the stock tubes?