$1300-1500 DAC

@piga  so I had this humming sound in one of my speakers and I tried everything to get noise out of my line including the PS audio Noise harvester of which I have 3,  they were blinking like crazy .  Anyway time went by and I kept trying one more things to get this noise out of my system then one day when I was cleaning out the garage I unplugged one of those bug zapper lights I went back inside to get something to drink and boom Immediately noticed the noise was gone.  I went and looked at my noise harvesters and they had stopped blinking.  The bug zapper was putting DC noise on the line.  I don’t know if they remove noise but I know they can tell you how crummy your electricity is . 

My main system has a Simaudio Moon 280d 

Another vote for Audio Mirror Tubadour.

@andrewkelley
Have you compared the Simaudio Moon 280D with any good 1.5k DAC?
I believe a good dedicated DAC with a good source should sound better. If not, the Simaudio Moon 280D is a giant killer as, for the price, its a streamer and a DAC.
If not, may be you should think about upgrading your main system with a better streamer + DAC and keep the Simaudio Moon 280D in your second system. It would cost a little more, but you could get better sound in your main system, as I guess could be better. Of course, you would have to change the Bluesound Note for a better sounding bridge like the SOtM SMS-200 Ultra Neo or the cheaper Sonore Ultrarendu. 
I prefered my SOtM SMS-200 Ultra Neo + Gustard U16 USB Converter + Audio-gd R8 Ladder DAC combo (about 3.5k total) against a +20k Mark Levinson streamer and DAC and also vs a +20K T+A DAC.
Just an opinion. 

I have just done exactly what you are thinking. I had bought a Chord 2qute Dac which was too bright in my system, I have swapped this out for an Exposure Dac which has a very organic analogue sound could not be happier. It is a brand which is often over looked. 

I really like my audio mirror tubadour lll, it's very musical. Can't have it all at $1500 but it's certainly not going to be shamed by a more expensive unit.