Class D options


I’m looking for a spare pair of monoblock, just in case my tubes fails.
My main options are:
-Mola Mola Kaluga
-Bel Canto REF 600
-Theta Prometheus

They will be driving the mids and highs of my Evolution Acoustics MM3s. My preamp is an ARC Ref. 10.

Thanks for your help.
leog2015
From everything I’ve read about the Bel Canto/BC Ref600 monos,
they sound like a great product with the NCOREs, which seem to be supporting the higher end Class D amps, and trickle down tech from the BC Black series. 

Im just a BC DAC owner and like their products (I plan to buy a BC Ref 500s amp myself.)
.  But of course, it all depends on speaker synergy....
That’s a great idea Erik, 
I was just on their website last week looking at the Monoblocks.

The moons are so easy to “build”, Just plug in some wires, solder a couple things, and screw the amp case shut. I watched the DIY video. And they have the NCORE modules that I wrote about above that are the latest and greatest affordable Class D tech.
Digital Amplifier Company (DAC) I just had a Stereo Maraschino (STM) on demo and love what it did. Clean and tuneful through the full spectrum of sound with loads of detail that sounded just right on my 100db Charney Audio Maestro's.
Will be purchasing a pair of mono blocks and his preamp when released.

http://www.cherryamp.com/  
NAD M22 V2.
I have an M27. Sound is smooth, and detailed.  It soundstages very well. Quite wide though not as deep as others. Bass control is also very good. 
I have the Bel Canto REF 600. They sound really amazing with my Dynaudio Confidence C4's. The review stated it very well. I really like the sound. This is my first Class D AMP and I cannot believe how good they sound.

Ravi