My experience was basically the opposite. I had xduoo, smsl, some thx even an ifi and a few others. And they all dropped sound, played static or would shutdown randomly. I had 3 topping products and none of them did any of that. But basically all of them were chi-fi.
I will say that my he6se died while connected to the a90. But, I do think it was a faulty headphone there.
I went portable and have zero desktop amps now. And I am much happier.