Mark Levinson 383 - this is overpriced stuff, though a nice match to your Mini U
Jeff Rowland Concerta II - good match, you may consider to grap.
Yba Passion - no idea, but YBA sounds thin from my years
Pathos Logos - cool look, shall be a good combo to MiniU
Musical Fidelity TriVista (or Nuvista) - this is more or less matching your other system, though I dont think it sounds better than Concentra II
Krell KAV 300iL/500iL - forget KAV series, out of range in terms of quality among amps mentioned above
Electrocompaniet ECI 4 - new model, quite powerful, your MiniU will be shaking.
Audio Analogue Maestro - over rated amp, HiFi Choice rating 3 out of 5 on sonic performance only.
Hope these help.
Jeff Rowland Concerta II - good match, you may consider to grap.
Yba Passion - no idea, but YBA sounds thin from my years
Pathos Logos - cool look, shall be a good combo to MiniU
Musical Fidelity TriVista (or Nuvista) - this is more or less matching your other system, though I dont think it sounds better than Concentra II
Krell KAV 300iL/500iL - forget KAV series, out of range in terms of quality among amps mentioned above
Electrocompaniet ECI 4 - new model, quite powerful, your MiniU will be shaking.
Audio Analogue Maestro - over rated amp, HiFi Choice rating 3 out of 5 on sonic performance only.
Hope these help.