What do you think of Topping E50? I bought it too and when I bought it it cost €260.
I saw that it has now "collapsed" to 190€. Well, after a week it ended up in its box and on a shelf. He had let me down.
The sound, speaking of the various frequencies and voices, was good, but for me it had one major flaw. The Soundstage.
The width may not have been very large, but sufficient.
The depth is a disaster. Absolute lack of depth.
Everything seemed to be stuck in just 1 layer. Much better, for the soundstage. the E30. That I have. The E30 lacked a bit on the high frequencies (cymbals), but otherwise it was fine.
I now own and use the D50s with satisfaction. A whole other planet.
For me the max.