Charlie,
I assume buy your choice of speaker and amplifier you appreciate musicality. Your speakers will preform better with more power but kt-88 will not give you the same beauty in the midrange. the sub is not the answer. A better solution might be a mesa baron or music reference rm-9 or similar powerfull el-34 amp. Also a sweet sounding (like a meitner mtr-101)solid state amp with a pure tube designed pre-amp(like the Audible Illusions).
I assume buy your choice of speaker and amplifier you appreciate musicality. Your speakers will preform better with more power but kt-88 will not give you the same beauty in the midrange. the sub is not the answer. A better solution might be a mesa baron or music reference rm-9 or similar powerfull el-34 amp. Also a sweet sounding (like a meitner mtr-101)solid state amp with a pure tube designed pre-amp(like the Audible Illusions).