G68ADV running latest FW should give you up sampling and apodising and that may be preferable? Later generation DACs so better performance maybe but equally G68 is a busy box so possibly noisier than a nice simple DAC?

Have a listen and decide. Doubt there's very much in it TBH. I'd be tempted to go for the simpler system and I'd leave out the 566. The G68 should be better on the face of it?

YMMV.....

Richard

Main system; 861v8 ID41, DSP8000SEU fronts with DSP5500 centre and DSP7000 rears (all in lovely silver) 504, HD621
Second system 861v4 ID40 LPS, G98DH, 504, HD621, 2x DSP5200 with DSP5200 centre
MD600 tucked away in study. Lots of other Meridian!