I have bought a new DAC for my office system - Topping E30ii, for ca 150 usd, here Norway. First impression - quite amazing, for this low cost. Much better than the older low cost DACs I used before (Steinberg Ur22, Zoom H6, Fiio x3ii etc). The Arche system clearly shows the difference - a better source means it performs better.
Over the last months, I have stopped worrying that the Arche speakers sound "bright". They have mellowed. But they remain very precise. The better the digital resolution - all else equal, the same recording, production etc - the better they sound. When they sound harsh, its mainly in the recording and the lower file format /resolution. CD format files usually sound more hard and flat. Allthough in some cases the CD mastering outperforms the rest. Both formats sound good with the Topping e30ii, but the step up is clear with the higher formats especially.