Good Entry-Level DAC


So I had a nice California Audio Labs (sort of ) tubed  DAC that I used with my Rotel CD player. It ,made a huge difference to the sound; after getting it, I re-discovered my CDs! 

I moved over to a NAD C516 BEE CD Player (I know, entry level, but that's what I've got) a couple of years ago or three. I found the DAC didn't make any audible difference; so I sold it.

I think the NAD has a pretty good DAC Chip ( 24/192 Cirrus Logic Delta/Sigma DAC, whatever that means). Is there a reasonably priced ( < $1K) DAC that could significantly improve the sound?

Ideas, anyone? 

gasbose


gasbose
Yes, DACs have an analog output and the noise floor can be measured on those outputs. No matter how much noise comes in on the digital side if the DAC measures noise at inaudible levels on the analog side then it’s doing job and is a well designed DAC. That’s why reclockers and supposedly noise lowering cables are irrelevant for well designed DACs. Say I use a lousy cable with no shielding and the noisiest computer I can find to feed a DAC and the noise is ridiculous coming into the digital side yet when it leaves the analog outputs it measures - 120db and is inaudible to humans and then use the best cables I can find and clean the digital before entering the DAC yet the analog side measures -121db was all that cost worth -1 db that’s completely inaudible anyway? It’s not 1980 anymore even a well designed $250 DACs can handle a lot of noise.
Try a Topping D90 from Apos Audio.  Price matching and returns are allowed and they double the warranty.  I added this to the Bluesound Node 2i and changes were significant.  Better resolution and detail.  Better bass.  Better everything in my case.  For less than $700 it is worth a try. 
We just got in a Topping E30, which apparently replaced the D-30.


It measures well and sounds better- smoother and more 3D than the D30; Already we've seen it topple a $4000 DAC...


I've no doubt that it would help out an entry level NAD. I've never been a fan of digital but Topping is winning me over. This is because in the past to get a really musical DAC you had to spend close to 10K or more; now for just over a hundred bucks you can do really quite well.