What a great question. Sometimes this works, it's not always so easy. I had a rogue tube pre going into 2 mono blocks from Auralic and it was very good, but lacked a bit of detail. Soundstage was huge and imaging very good as well. When I swapped in a solid state amp from ML when they were called Proceed, the sound was surgical in its precision, but lost some warmth and bloom.
definitely worth experimenting, but IMO you can get superb sound with a SS pre and do not necessarily need a tube pre.