Bluesound installed DAC - music killer?

I have the understanding that NAD is the owner of bluesound. And they have a streamer for about 1500.00 . It uses the same card as the node but with a better dac . Anyone that can give some insight into this. 

I have Node 2i and after about a month with it, I connected it with a good Analysis Plus coaxial interconnect to the MHDT Orchid tube DAC. It’s sounding great, now. I rolled the stock tube in the Orchid and it sounds even better. I have no impulse to upgrade the streamer, now. It sounds wonderful.

I have a Vault 2i, love it.... doesn't sound bad through analog out but sounds great with a good DAC.... using a RME adi-2 and its a great combo.

@asw  NAD, Bluesound, and PSB Speakers are all part of the Lenbrook Group head quartered in Pickering, Ontario, Canada.  The product you are thinking of is the NAD C658, which is a DAC, preamp, and network player, which among other things features Dirac Live room correction. 
Sort of like a Bluesound Node 2i on steroids; but unlike the Node 2i, without to my knowledge digital outputs.  I've read about it, but have no personal experience with it.  A couple years ago, I considered it, but settled on a Chord Qutest.  I've been a BluOS user since 2014, and have 4 pieces of Bluesound kit in the house.   

@asw The NAD C-658 is probably the BluOS streamer/pre-amp/DAC you're referring to. It is part of the "Classic" (C-***) series. It uses ESS-Sabre 32bit DAC and includes MM phono stage, DiracLive bass correction (and pay-upgrade to full-freq. version) and balanced outs. It earned top-honors by What-HiFi, Sound & Vision, etc. I don't have experience with this unit, but it is a compelling option.

I do have the C-388 digital integrated amp (with HDMI-2 and BluOS2i MDC modules), and am extremely fond of this all-in-one unit in my 2-ch system. I chose C-388 over the M32 because C-388 has Speaker A/B capability (M32 does not). I use this unit as a source to feed miniDSP4x10HD that functions as a crossover to drive LXmini speakers via 12-ch ATI (class AB) amp. Sometimes, I also listen to a set of Martin Logan electrostats directly from the C-388, normally I route ML's through the miniDSP also - since there are pleanty of amp channels, and it allows taming ML bass and extending the highs (by DSP) - makes them sound better to me. NAD C-388 uses the Burr-Brown PCM-1794(a?).

I recently tried something on the advice of Danny at GR Research (who said the poor-quality DACs in NAD and miniDSP were likely veiling the sound). I purchased two highly-rated (SINAD) Topping E30 DACs, and ran the digital signal (from optical source) direct to miniDSP nanoDIGI (which has 2 digital coax in, DSP processing, and 4 digital coax out) to the Topping DACs for full digital signal till DACs RCA-out to ATI amp. After a couple weeks of listening and playing with DAC filters, my conclusion was...

• It can be made to work - actually works great!
• It sounded different - and adjustable with DAC filters
• It doesn't sound better - to me in my room

Returned the Topping DACs (cost $5), and went back to built-in miniDSP4x10HD DACs. It was a worthwhile exercise and fun experiment - just didn't improve SQ.