Last year i tested topping e30, E50, d30 pro. Smsl su-8 v2, m8a, su-9, m400(almost all product range lol), denafrips ares 2, topping d90 non mqa, and now d1se, i think d1se beat them all in terms of sound quality. How do you like it in comparison to pricier dacs like Audio-gd r1 or gustard x26...