A Better Bluesound AC Cable?

IMO, lowering the noise floor will improve any component. In fact, I could see where you may get more "improvement" with power upgrades then stepping up super high priced interconnects (assuming you have well made interconnects). I'm not certain if $5000 power cables will reduce noise any more than a $200 well made cable, however, most component makers source their OEM cables from the same cheap, mass produced suppliers overseas. Chances are your $4000 amp has the the same power cable that a $99 Best Buy receiver has. 

I put an AQ power cable (forgot which model) in the Node. 
Heard absolutely nothing different.
B

@grdrbob, IME Audioquest PC's don't provide a black background like other cables.

I jist picked up a Vault 2i   thanks for saving me some $$$ gdnrbob

@gdnrbob RE:...

I put an AQ power cable (forgot which model) in the Node.
Heard absolutely nothing different.

What Interconnects are you using?

If the IC's are not capable of ultra-high resolution audio you will not hear Power Cable improvements.

Also - what type of improvements were you listening for...
- better defined bass
- faster Dynamics
- improved clarity
- larger, more well defined image and performer focus

You should have heard all of the above

Is the Node 2 connected to any type of power conditioner?
- Mine is effectively plugged into the outlet - i.e. no conditioners/filters 

KLE Innovations Power Cables will definitely improve the performance of the Node 2 over the stock cable

Regards