Describe ube sound vs solid state

I was gone away long long ime so me girl listen to (expensive) Arcam rcvr all dat ime.

well when i come home i tink hmmm, don't sound right, so i switch back to dem ubes and we watch some shows.

den she says (unprompted, dats important): "BOY, why does it sound so good??"

I go: "baby, it's dem ubes"

Rue story.