This has been about as close to trial by fire as I've ever been.
It all started when I wanted to try a new pair of speaker cable. I had a four channel amp that could be made
into two channel (monoing two channels) and wanted to hear how they sound. Had two sets of SC originally and only had one set of trial. It was awesome sound while it lasted. Fried the amp cause the speakers were 4 ohm. Went through a slew of amps trying to come up with one I liked and during that process my wife who lost her vision inadvertently turned the volume all the way up through the remote didn't realize she was on the wrong channel. When she pushed the right one it blew out the mid range on a speaker. Of course you can't get a new driver on a twenty plus year old speaker so now gotta find a good combination.
With having a job it became quite the challenge. To get to 500 hrs on a piece in thirty day requires the unit to be on over 16 hrs a day and the manufactures kept telling me to give it time to break in. That ended up with purchasing and having to sell as used six different amps and two pair of speakers. I estimate I've lost over five digits money wise and yet I pursued on. I got a little crazy with it cause during that time I was dealing with my wife's situation (which got worse), not thinking properly and taking someone's advice other than my own ears.
In the end I've found that class D just isn't for me and while I set a limit on my purchases should have gone beyond it in the first place cause I ended up putting out the money through my endeavors.
I now have Dali Rubicon 6 speakers, Coda Continuum 8 amp, Sonnet Morpheus mkII dac with Happa Audio connecting everything. I hope to never replace my Accuphase C11 pre or MF MCD cd spinner. Hoping this is it for me. I had original stuff for over twenty years and was happy. I am at happy plus with what the system is now.
And to top it all off I find myself not listening to anything since the loss of my wife. Go figure.

Don