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.
128x128leog2015
Post removed 
But in one review that I’ve read in Sterophile, they were considered to have lesser sound quality than the Prometheus...
So,  you are looking to have something on hand, which you may never listen to?

Make your own.

https://www.hypexshop.com/
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....