Amp(s) to go with Joseph Audio Pearls

I need feedback on some new Amp(s) to go with my Joseph Audio Pearls. I have a Backert Labs Pre Amp (tube) and a DCS Bartok DAC. Budget is $10,000 to $15,000. Tube or SS is fine. Monos or Stereo is fine. Used or New is fine. 

Thank you in advance for your thoughts and ideas! 

Richard