Beveridge owners.what preamp do you use

I have owned the vintage Beveridge 2sw system for a couple of months and love the way it presents music. I have been using a passive Sonic Euphoria and the purity of music is wonderful. What the passive does not give me is PRAT on this system. I tried an active tube preamp and gained the PRAT but lost the incredible purity of the passive. It ended up sounding more like Hi fi and less like music. I am back to the passive wondering what other owners of this magnificent speaker use for preamps. I have also been told by two Beveridge owners that the Beveridge preamp is not the way to go. Any feedback would be appreciated because I am a greedy audiophile who wants it all. Bob