Ouch. While I do applaud the presence of any company's representatives on these forums, I also was disappointed with the lack of communication from the designer on the PA-5 issue. While people may say that this is not a proper discussion for this thread/stick to this product and so on, it does indicate that Topping's reputation has been dented as a result of these failures and, more importantly, their response to it.
As someone that appreciates any design that makes excellent audio reproduction accessible to the masses with a low price point, I would love to regain the confidence in the brand so that I could buy Topping gear in future without any reservations.