Mola Mola? That is some name for an electronics manufacturer. The problem with class D amplification is that there is a very broad range of quality. It can be a very cheap way to build an amplifier of mediocre quality with a high school electronics degree and make a lot of profit.
Then there are the good ones like the Rowlands that are faster and have high quality power supplies. I had a pair of TACT amps that were sort of class D. They were pulse width modulated sampling at 90 meg. They sounded very nice. I used them to biamp my Divas. Unfortunately they struggled to drive my Acoustats and would keep tripping their protection circuits so I moved on. I think Lyngdorf still uses the design. I have not had the opportunity to listen to a lot of class D amps so my opinion lacks for sample size but I have not yet heard one that sounds as good as a Class A amp. Hopefully some day that will change as I see no great advantage in all that heat and high electrical bills not to mention that big heat sinks are expensive.
Then there are the good ones like the Rowlands that are faster and have high quality power supplies. I had a pair of TACT amps that were sort of class D. They were pulse width modulated sampling at 90 meg. They sounded very nice. I used them to biamp my Divas. Unfortunately they struggled to drive my Acoustats and would keep tripping their protection circuits so I moved on. I think Lyngdorf still uses the design. I have not had the opportunity to listen to a lot of class D amps so my opinion lacks for sample size but I have not yet heard one that sounds as good as a Class A amp. Hopefully some day that will change as I see no great advantage in all that heat and high electrical bills not to mention that big heat sinks are expensive.