Class D audio vs James Romeyn

I have tube amp/very efficient speakers in my other system.
This is a different project. I have Virtue audio Sensation in this system, need more power. It's a class D and I'm not unhappy, just need more power in compact package.

Thanks to everyone for the very useful information. There is one more class D company that also offers in home trial- Digital Amplifier Company? Anyone familiar with them? 

Can't agree more about the power supply! My Sensation has, I think, a Doddson power supply ( not the battery) and it's a different animal with it. 
BTW, I'm using a Squeeze box duet with PS that costs 2x than SB and it sounds so good (via Anedio D2 DAC) that I'm still reluctant to change it, for example for the Bluesound Node that I have in my other system. I know, eventually I will, when MQA has more titles in Tidal.

I ended buying Class D audio with upgraded power supply. Had Audiosmile supertweeters and very happy with the result. Now looking to buy some relatively cheap (up to $1500 R2R DAC). Looks like Soekris will start shipping one for $1200  in early June.
Thank you everyone for the very useful info.