Fernando, welcome back to the world of tubes. I think the EAR amps are some of the better tube amps on the market. BTW, IMO, If you are looking for bass slam, then you should consider getting that from the amp in your sub....a typical tube amp isn't going to give you that and shouldn't really be expected to, unless you have a CAT that is, LOL. Enjoy.
Oh, the next step is to consider a tube preamp. ( which is where I think the most difference lies...although I know many will disagree with me).
Oh, the next step is to consider a tube preamp. ( which is where I think the most difference lies...although I know many will disagree with me).