You believe what you want. I gain 0 utility from your amp, failed or not.There is no difference between amps made pre July 15 and post July 15 - Topping.
Sure 10 people in a group chat had broken amps.
How many of those amps has Topping sold?
What is the usual failure rate of manufactured electronics like amplifiers?
Your figure is useless
This is the situation: A known issue that can arise is popping which can be fixed by a module replacement.
Some guy got three (3) REPLACEMENTS before he didn't need another...
Since Topping knows what the issue is, and they fixed his amp, shouldn't it be impossible to need three?
And No manufacture on earth would ever tell you how many revisions they did on their products especially those failed ones whatsoever. The underlying logic is so simple that I don't even bother to explain.
I understand that selling ideas to people often times is like pointing to their noses and tell them they are stupid. Because any infomation yet disclosed are most likely out of people's knowledge, sometimes hard to get along with. But, in any case, this forum is in many sense in persuit of truth.
In case someone else wonder where I got all this information. Here is the screenshot of a private converstation between me and JohnYoung. You can google translate it.