el_giovato,
I have a Cayin TA-30 tube amp and it sounds fantastic with my M3ti. These speakers don't need a sub to put out all around fantastic sound. If get the M22ti I would suggest using a sub and i'm sure most all would suggest the same.

Axiom M80Ti(4) Axiom VP150(1) Axiom Qs8(4) Axiom M22ti(2) Axiom M3ti(2)