BHK 300 vs Luxman m900u vs Mola Mola Kaluga


Looking for insight on sound comparisons between these three amps.  Had and liked the BHK’s, but returned them due to ongoing QA issues.  I’m concerned about the bass capability of the Luxman, and about class D sound from the Kaluga.  Have heard neither, and can’t get a demo.  Linn Akurate DSM/3 fed by nas for front end; Monitor Audio PL300ii speakers.
lldd
Check out the AGD amps if you are thinking about class d...has latest GaN (galium nitride) transistors.  They're like nothing I've heard, with  fantastic transparency and micro-detail but without being edgy, hyper detailed,  or bright.  They've been described as a solid state SET with power.  And from a practical perspective, they are small and light and super efficient.
Get a real amp look at PASS 250.8 or 350.8 for much better sound.Underwood Hi Fi has some great amps for the money as well.Good luck.