Integrated for Martin Login Motion 60’s?

I would appreciate recommendations for an Integrated Amp that would complement my speakers.  Martin Login Motion 60’s supplemented with SVS SB-2000 Subwoofers.  Cardas Crosslink cables.  I would like to move away from class “D” to solid state class “A” or “A/B”.  Amplifier must have pre-outs for the Subs.  No DAC.  Have read great things about Coda, Luxman, Krell, Rega, Simaudio, and Sugden.  BIG room with 18’ ceilings.  Sources are all digital.  Listen to all types of rock and occasional blues/ jazz guitarist.  $5k is budget new or used.  My class “D” has detail and accuracy at lower volumes, but when I turn it up, it seems to lose depth and fullness.  I’m hoping a Class “A” or “A/B” can help with that?  If Luxman, 507 vs 550? Sugden A-21SE vs the IA-4 or ANV-50?  Will I even notice a difference with these speakers?  I realize the ML’s are not a reference level speaker, but I enjoy them.  If you have heard these speakers with an amp you enjoyed, please let me know.  I am not close to any brick and mortar to listen. Thank you.

Martin-Logan Motion 60XTi: Floorstanding, 35-25,000 Hz +/-3 dB, 80°x30°, 94 dB @ 2.83 v/m, 4 Ohms but compatible w/ 4,6,8 Ohm amplifiers, 400 & 2,200 Hz, 20-400 watts.