1000 Pro with dCS Vivaldi?

[agentsmith]

Could it be to demonstrate how good the AD conversion in the D1000Pro is?

That's my first thought.

But what would that prove?

If the Vivaldi Analogue into the Devialet sounds the same as the built in DAC, that means the Devialet homogenises everything?

If the Vivaldi sounds worse, the A2D is no good?

If the Vivaldi sounds better, does it mean the A2D is no good?  Or the Devialet built in DAC is better?

Since everything is bottlenecked thru the Devialet DAC and amp, i think it is hard to draw conclusions.