no doubt pairing tube pre with ss power amp has been a well known much practiced recipe for audio happiness for ages
c-j and arc are tubed pre stalwarts, impeccable sound and quality, forever units from forever companies standing behind them
once again, it depends on what one is desiring the linestage to do sonically... even if one wants tubey goodness in the chain, is the linestage where it is introduced? there are wonderful tubed phono stages and dacs... you get the drift...