Little class D amp vs tube amp

Tubes. 

Same investment in both systems total?

Not sure what the point is here — different systems in different rooms sound different even on a YouTube video?

Tubes, willing to bet Sarah is wired with high quality Decware cables also. 

@mapman Same investment in both systems total?

I think the Decware Zen Master ZF15 dual wood finish ($7,900) was attached to Sarah (>$5000 with tubes?). If so, the Sarah system will cost approximately >$13k plus cabling.

Sytem 2: $500 incl. cables (Mogami ic plus Micca 14 awg speaker cable)

However, money isn't the focus here. If the recordings had been done more professionally instead of using cell phones, both systems would sound better, even on the YouTube platform—I can guarantee it. This little Class D amp sounds sweet and creates a huge soundstage with weighty bass in the listening space I had, though the imaging could be a bit more focused.