750$ Intel NUC vs $6000 Aurender N200: I don't hear the difference

Every single process on motherboard produces noise. Every single cable, connector, LPS, switching power supplies, piece of equipment produces noise. Less than optimal home and equipment grounding, quality of AC are another source of noise. Noise is in form of EMI/RFI, also external sources such as wifi, cell phone towers, etc. I have Trifield Meter, can assure skeptics there is much RFI coming out of streaming equipment.

In speaking with guys at Uptone they mentioned speed of processors on motherboards, point being limiting time signal on motherboard important for sq. Incredible how far into the weeds one can go with this stuff.

Do people realize that whether a computer use 10 watts or 500 watts, it still must pass the same radiated and emitted radiation standards? There is no guarantee the lower power one is less noisy either, though it is often easier to shield, but that does not mean that it is.

RF fields from unintentional emitters (computers, etc.) are fairly small, even on cables assuming you are using something that has met FCCICESIEC standards for consumer/residential. You don't have to move very far away from them until the fields are low, probably lower than a nearby radio or TV station. Those cheap meters pick up stuff, but you have to be quite close to pick it up.   And even if there, there is no guarantee it will get into the end equipment and most of you are just guessing that it does.

I again spoke to the dealer. Asked him if he was sure if the unit was burned in. He got back to me yesterday saying it has only 60 hours on it.

Aurender says the N200 needs 150 hours to sound its best. Maybe that is the issue.

The unit is going back and I might demo it again in a few weeks after its 100% fully burnt in.

It is not the issue. Burn in on a server , 150 hours.... come on. That is stretching the realm of believability beyond the usual in this hobby. Swamp land in Florida anyone?