Joe, I prefer tubes for most things too. The Tannoys have impedance peaks around 60hz and 1khz - so a tube amp with a low damping factor acts as a tone control and boosts the midrange and kick drum fundamentals.
Many people love 300b's with Tannoys for this very reason. I can't see why it wouldn't in theory be possible to get the same effect with DSP based correction - as available with the Devialet. Of course it wouldn't have the even order harmonics of the 300b but then I doubt the Manley does either.
Not suggesting it would be better - just that the DSP gives lots of interesting avenues to explore.