ESOTERIC N-01 Replacement For My PS Audio BHK Preamp & Directstream Dac with Brige ll

I have Chord Dave ( upgraded from  PS Audio DAC with bridge II ) going directly to the Pass Labs XA 160.8) 
After listening to Chord Dave i did not think twice and upgraded from PS Audio, plus i use headphones so having headphone amplifier sealed the deal.  Only negative with Chord Dave is that you need pretty good network streamer . I'm not sure if you have headphone setup but if you do i would get DCS Bartok instead.

I also have Focal Sopra 2

I heard Chord Dave but never did a A/B with the 2. Chord Dave was excellent especially with your Pass 160.8 and Audio Research REF 10 or Ref 6 in the mix. I am shooting for a network streamer Dac combo to and to have less in the chain as possible.

Bluemartini

You may want to also check out the Lumin X1 which is in the same league as the Esoteric NS O1 yet costs $6k less.

Both of these are really fantastic units the nice thing with Lumin is that they are constantly improving their firmware with over the air upgrades to always ensure that their products are working well and stable.

The Lumin is also very attractive and compact

The Lumin is also a techological tour de force with a dual mono, ESS 9038 pro chip set with a independent Lundhal output transformer for each channel, which helps the X1 to create a very fluid sound.

The X1 uses some very advanced clocking with multiple Femto clocks driven by an FPGA based buffer.

Another fascinating feature the X1 built in optical ethernet connection which allows you to totally isolate the dac/sreamer from network noise and this feature is very inexpensive to implement.

The reviews of the X1 have been all raves with Allan Sircolm of Hifi Plus proclaiming that you have to spend to to three times the money of the X1 to get anything which may sound even better.

Dave and Troy
Audio Doctor NJ Lumin dealer