I run a fully modded (underwood, used <$1000) Jolida 502B into a pair of 90dB Snells. The CDP runs 5751 Raytheons (around 30% less gain than the stock 12AX7's). I wouldn't go any less in power or speaker sensitivity. I have plenty of volume(sounds lovely), but have occasionally hit 2-3 o'clock on the volume knob on jazz vocals or some acoustic music...I'm guessing there isn't a whole-lot of power left. At 8-9 feet from the speakers I'd guess I'm hitting mid 90's in SPL (I have a RS meter, I just haven't measured how loud 3 o'clock is) with dynamic peaks going a bit higher.
Have you considered the Jolida tube/SS hybrids(more power)?
Have you considered the Jolida tube/SS hybrids(more power)?