I feel like that' happenes a lot to Topping in particular though. I think they iterate too quickly, and each new version at that point/use has a high chance it will be a completely different design from the ground up. With all the issue that entails, and with none of the fixes they applied to their previous version. It's a little disjointed.The Topping DX5 II has what I feel is illogical pre/line out behaviour when enabled, you can't selectively set specific outputs to pre or DAC mode, enabling it forces all outputs to line out (DAC mode), I realised this by accident and nearly blew my speakers once.
Silliness always finds its way into released products I guess.
I like the look of their products, but they're not really getting themselves in hifi stores, like how fosi, fiio, ifi are in Richer Sounds. I hear bad things about their returns policy and warranty. Might just be they haven't really been all that serious about this market yet - but I think they've got to improve their presense and game. I would like to be able to buy something by them, but I'm not chancing it, currently.