I have heard nothing but glowing reviews for Grant Fidelity tube amps.
glowing reviews... ouch.
I don't know a thing about larger tube amps, but I do love my Little Dot MKII headphone amp. I've had it for several years and I have nothing but praise for it. If you go the route of needing a dedicated headphone amp, it gets my vote.
And on a personal note to the OP, I see you're new here. Welcome! Be advised that there are definitely a few camps here regarding amplification and sound quality. Some say it absolutely makes a difference, some say not at all, some say 'maybe'.
We tend to keep it civil, but I'm sure you'll get a few more posts encouraging you to abandon your desire to buy a tube amp. I'm not saying you should or should not take anyone's advice, just that be prepared for a difference of opinion.
But again, welcome!
