Who has Luv for the Lyngdorf 2170 and is thinking about the 3400.

The 3400’s integration with Roon/TIDAL and Spotify Connect over ethernet is seamless. It allows you from standby, or any current input, to cue and play a song from the Roon/Tidal app or the Spotify app from your phone or tablet and the Lyngdorf TDAI 3400 will switch automatically to appropriate input automatically. Track forward, track back, pause/play, and volume control from either the physical Bluetooth remote and the aforementioned phone or tablet apps is a nice touch. My Roon dedicated server uses a dedicated fanless quad-core computer made by www.AtlastSolutions.com out of the UK. It sports an 512gb nvme ssd, 32gb ram, i7 quad-core intel processor, and I added a 4tb ssb for my music library. I installed a $400 dedicated JCAT femto based USB card to connect it to the Lyngdorf directly just to play music or media from sources other than Roon or Spotify since the 3400 handles them natively. I power both the USB card and the fanless media server that runs absolutely silent with a dedicated linear power supply made by HDPLEX.COM.

Personally, I find the sound from 3400 is exemplary in all respects. So much so that I rarely switch to my 300B tube amps anymore. It’s simply that good. I’m completely smitten by Lyngdorf’s implementation of Class D. It’s not something I come to grips with easily having been so used to the tube sound of SET amplifiers for so many years. It’s not identical to a SET in the midrange, but it’s utterly neutral and very emotionally engaging. With Room Perfect on the improved sonics for me surpass an entire system upgrade.

Agreed! The Lyngdorf units when properly and patiently implemented are just flat out satisfying. I never think about amps, preamps, or dacs anymore! 

I am also using the 400 watt HDPLEX external LPS with my HTPC rig. I am also using separate LP supplies to power the internal SOTM USB card and the iFI Micro USB that were recommended by and upgraded for me by Grannyring. Power supplies DO make a difference.

Thanks a lot for quick responses, i do appreciate it.
I assume you are feeding in to Lyngdorf via USB module, is that correct?

Yes. From the iFI to the Lyngdorf USB module.
One of the surprises for me is the iFI module. It was chosen over the Muteck, the SOTM-USBUltra, UltraRendu and some other solutions of much higher cost. We just kept going back to the iFI.