Generally, solid state with a relatively high damping factor and good power into 4 ohms will work best. I'm using a Conrad Johnson CA200 solid state, control amp to push my Baby Grands (around 300 watts into 4 ohms). I have a tube phono pre-amp, so you can see that I'm not anti-tube. Oh, my headphone amp is tube also, but that's a different discussion.
Today's better solid state amps have no compromises in transparency and openness vs. tubes, IMHO. That's not to say that tubes can't work, but you'll have to wait on others to make those recommendations.
The quality of your front-end is probably a more important consideration than whether your amp is SS or tube. If you're into vinyl get the best front end that you can afford. Same for your digital source. The very best amps combined with the VAs will reveal any quality issues in your sources. If you're using an amp like Conrad Johnson, Rowland or Parasound and you hear any hardness, it's probably your sources or cabling causing that hardness and not the amp.
Happy hunting.
Dave
Today's better solid state amps have no compromises in transparency and openness vs. tubes, IMHO. That's not to say that tubes can't work, but you'll have to wait on others to make those recommendations.
The quality of your front-end is probably a more important consideration than whether your amp is SS or tube. If you're into vinyl get the best front end that you can afford. Same for your digital source. The very best amps combined with the VAs will reveal any quality issues in your sources. If you're using an amp like Conrad Johnson, Rowland or Parasound and you hear any hardness, it's probably your sources or cabling causing that hardness and not the amp.
Happy hunting.
Dave