Based on that chip’s datasheet, I don’t disagree that the Douk amp should be able to push 60wpc at less than 1% distortion.
Does it sound good doing it? I’ll take your word for it :)
Edit: I can imagine the Douk doing a decent job of driving entry-level, 2-way ported bookshelf speakers, that sort of thing. But for $2000 as you mentioned, you can get into some pretty serious vintage speakers that would cause the Douk to self-immolate in short order. In fairness, I've never auditioned the Douk.

