pkelly1504Hello & thanks for the responses.
Would the best option be to buy tube mono blocks with the most power for the $$?
No, just throwing tube watts at them is not the answer. Wattage is not the answer here, current is, and for that you need what Stereophile is saying and recommended. Amps like these, Mark Levinson No.33, Boulder 860 and the Parasound JC1’s these are all bi-polar (bjt) output amps. Only then will you get control over these speakers, especially in the bass.
A really great amp for these even though party loudness music would be out, and to show you wattage is not the answer, would be the old massive 1977 Mark Levinson ML-2 mono blocks another John Curl design "real current pushers", they are only 25w each but they keep doubling that wattage down to .5ohm.
Amps that can "almost" double their wattage into each halving of impedance, means they have good current delivery eg: 8ohms=100w 4ohms=200w 2ohms=400w. When an amp can almost do these halving = doubling figures then it is capable of giving good current delivery.
Cheers George