O.K., the other end of your personal experience

Chinese company Jungson made some absolute crap of a integrated amp. This was right after a bad experience with a tube integrated, Aronov LS960I that while magical sounding turned out to be long-term unstable. So, keen to avoid a replay of that decided to go solid state.

Side note- this becomes yet another example of why not to select components based on narrow minded technical considerations.

Yes, we just called ourselves narrow minded. So there.

So anyway like we said this Chinese Jungson amp turned out to be absolute crap. In no time at all it developed some strange intermittent noise in the left channel. The Chinese Jungson customer service was so bad the Chinese guys actually came out to my house on the pretense of replacing it only to listen and evaluate and learn what they could from me. (Does this sound familiar?) These two Chinese guys from Jungson saw with their own eyes and heard with their own ears, their amp was defective, told me to my face it was indeed the amp, then lied to my face. Because far from replacing it as promised they then totally stopped even taking my calls. 

Fortunately my dealer was a stand up guy and made me whole. But they stiffed him too and so being a good dealer that was the end of his doing business with Jungson.

Off the top of my head, my list of didn’t-cut-the-mustards (don’t ask me for dates or model names) --
Transistronics Integrated

Lyngdorf Integrated Amp

Infinity Black Widow Tonearm

Yeah, I had a crappy 8 track player ripped out of my car, damaged the center console, luckily was able to come up with a new solution covering the damage.

bought a r2r player, lots of assurances about specific questions, to avoid packaging and shipping, we went to Baltimore for birthday weekend, seller met us in Baltimore, saw it, crap, I didn't even take it out of his car, what a damnnnn liar, oh well, I got a more advanced model anyway.

When it comes to the Infinity Black Widow, it didn't take long for Paul Seydor to convince me to replace it with the Sumiko MMT for my SOTA Sapphire. There was no question regarding the improvement to the sound.   A few years later, though, an Alphason HR 100 S arm took me further, to where I still stand today.

Garrard Zero-100 turntable.  It left lathe chips of vinyl on the floor in front of it.  Still hurts 40+ years later.