I think your suggestion of Quad amplification is likely to be good here. An Artera or QSP power amp with a passive pre-amp should drive those speakers without any bother. The Quads are are good value too for the power and build quality on offer.
You could even consider a second hand 909, 707 or 606/II, they are very similar in design, power and sound quality.
The Quad sound is relaxed and clean with plenty of detail, bags of power too.
It is impossible for anything digital to sound analogue, because it isn't analogue!