Oops. I misread and thought he was using the DAC in the phone. Not sure if DAC in the Node would be an improvement or not. My bad.
1. Sony STR da5700ES Pre / Amp only as before...
2. Sony Pre into Bel Canto AMP (Theater Bypass)...
3. Bel Canto Pre / Amp on it;s own.
Not knowing anything different...1 was very enjoyable.
2 improved the top and mids....much cleaner / clearer, better soundstage, depth, lower mids into bass more "fuzzy / whooly" by comparison to 1.
3 initially sounded very bright on top....fatiguing...almost unlistenable on some tracks.
Left Bel Canto on with CD repeat for 100+ hours...
3 now is far better up and down the frequency range including the bass with bass cabinets set at "0". Rocket 33 speaker cables gave a nice boost to mids and tampered down the top just enough.