For less than I paid a few years ago for a Hifiberry DAC2, measured and perceived performance of this unit are better.
I first became aware of the limitations of the Hifiberry when I was A/B'ing between my turntable and the same material played digitally. I do this just to roughly confirm that my turntable is set up reasonably well -- assuming that the digital source will have less distortion. To my surprise, certain loud, high-energy sections were showing up cleaner from the vinyl vs digital. Then I found the ASR bench tests confirming the somewhat poor performance of this DAC. Anyway, lowering the (digital?) preamp stage by 10dB got it mostly under control.
By contrast, the Topping has a more relaxed/effortless sound (I assume this is because it has less distortion). Additionally, unlike the Hifiberry, it does not POP when changing sampling rates (I stream from my own library that has many different formats that I often mix and match). This is an extremely pleasing revelation.
I must say that I don't know why they set the default FIR filter as they do. It has quite a pronounced high frequency roll-off, so I was somewhat horrified at first by the relatively congested, dull sound and constricted sound-stage. Maybe most people's systems have a much more exciting high end than my aggressively mid-fi agglomeration of components from the late 70s to the mid 80s. Switching to F-6 (sharp roll-off, with the flattest response up to 22kHz) restored my confidence in the unit, and matches my general expectations for accurate sound reproduction regardless of the reproduction medium.
I like it! I'll be connecting a new TV to it in a few days, via the Toslink input. It's unlikely I'll be able to detect the increased jitter reported here, but even if I can, I think it'll probably be acceptable enough for my rather casual TV viewing purposes.