Everyone in audio has a different opinion on what sounds good and what does not. There are many factors that influence your opinion on equipment and its associated technology. Understanding the technology is interesting but, for me, how a piece of equipment sounds in MY system is more important.
After some discussion, my friend loaned me his James Romeyn "Class D" mono block power amplifier and I liked them very much. They sounded much better than my Luxman 590ax Class A integrated amplifier (solid state). The music was more open, detailed with much improved bass. I was very surprised and could not believe it. And, yes, I was hearing sounds that I have not heard before.
I consulted with James and decided to buy his Hypex NCore NC400 dual mono block class D power amplifiers ($2,980) with 2 NC400 amplifiers per side with the NC1200 power supply. He highly recommended his Class D dual mono version for improved sound quality and power.
The amplifiers finally arrived and they were a huge step above his mono block power amplifiers. The sound quality from my Hypex NCore NC400 Class D duel mono block power amplifiers is amazing. Burn in time was about 3 weeks but they sounded very good out of the box. However, as I was instructed. I made no judgement until after the 3 weeks.
My sound system sounds much improved over my Luxman 590ax Class A integrated amplifier. I mentioned this before in previous posts but we removed the R141 chip from the 4 NC400 amps that allow increased volume setting from my Bricasti M1 SE DAC. My DAC is going direct to my Hypex NCore NC400 mono block power amplifiers and I am not using a pre-amplifier. I am using the James Romeyn Pure Balanced POWer Fully Balanced Interconnect cable with Cardas Rhodium XLR Connectors. The Rhodium connectors took several weeks to burn in and sounded horrible out of the box.
I am hearing details, imaging and bass that I have not heard before. My system now offers breath taking detail, transparency, lack of noise, and excellent dynamics that I did not hear with the Luxman 590ax Class A integrated amplifier.
I purchased the Hypex NCore Class D amps from James Romeyn Music and Audio, LLC (James). He was very helpful answering my many questions and I suggest you contact him for more information on his assembled Hypex NCore Class A amplifiers (he offers 3 models). Please see this link:
http://jamesromeyn.com/product/hypex-professional-build-service/#tab-description