DAC/Pre-Amp Advice

OP, your Node will take care of MQA using the RCA outs. Most room correction software is either built into the preamp/integrated amp or is in a device that sits between your amp and preamp. You could insert a DSP device between a source like your Node and your integrated amp via RCA or s/pdif but you would need inputs of the right type for each source, including HDMI for your Sony.

Replacing the Node with an NAD C-658 will get you Dirac room correction, inputs for most of your devices (except HDMI), and a pair of sub outs for subwoofers.

The C-658 does have a "card" you can purchase that can add 3 HDMI inputs as well as an HDMI output you can insert. This should work for SACD two channel but ask the dealer to confirm before you pull the trigger.

@soix 

How do you propose the OP connect the DSPeaker Anti-Mode 2.0 you recommend with an integrated amp? The Sony uses HDMI for SACD's, I don't see how this will work in the chain with out a separate amp and preamp???

The connections path you posted has too many connections for my taste. A lot of cables and connections means more potential noise and jitter. Audio Advice is an NAD dealer and  recommended the C-658 when I was looking to upgrade my Node. I would follow up with a dealer and see if you can get one with a 30/60 day audition period. The price is attractive too.

OP, room correction is the real deal, I have a very well treated room which you need as room correction can’t do everything. When you add it to a well treated room it is WELL worth the cost of admission. Look at the graphs in my virtual system page. Here is just two channel graph, even before adding room correction I have a great room response but when you add the room correction WOW, I can just sit and listen on and on. When you A/B listen and compare corrected vs uncorrected you will never go back:

OP, until you get the room as close to "right" as possible (see the graph I posted) money on electronics is like putting lipstick on a pig as they say. You gotta measure AND listen, not one or the other. Get the room right first. That includes speaker positioning, room treatment, and DSP.

I think the NAD C-658 checks the boxes on a DAC upgrade to the Node and adding DIRAC to the mix.

Is there too much risk of added noise here?

BRP>TV>(Node) + (TT/Puffin)>MiniDSP>DAC>Yamaha= Yes, there is a risk of too much noise.

BRP+ TT + Node + TV>(DAC with built in DSP)>Yamaha= less risk, less $$$, hopefully better SQ