Server/Source Recommendation For Denafrips Terminator


Just picked up a Terminator and quite like it so far. I've an old Cambridge 851C that I'm using as a transport for the couple hundred or so CDs that I haven't ripped, and an Aurender N100H along with NAS totaling around 7TB. Files are mostly FLAC, WAV and about 10% are DSD.

I'm looking to improve on the sound quality of the N100H. I don't have a real issue with the Conductor App functionality and no real desire/need to step into ROON.

However, I am looking to add some input flexibility and not be tied solely to USB. The Denafrips has the usual suspects when it comes to inputs and it also has I2S, which I used way back when with some old Audio Alchemy gear (yes, I'm that old).

I've zero interest in streaming and zero interest in buying a unit with an inbuilt DAC.

Is it worth trying to find something with I2S connectivity, or are the "gains" too small to worry about?

Can you recommend a music server that wouldn't constrain the potential of the Denafrips Terminator and could be found on the used market for around $3000 - $4000, perhaps a little more if needed?

Looking for feedback from people who value (or not) the I2s connectivity and who have some experience with this DAC and a variety of sources. 

Many thanks.

Rooze
128x128rooze
@mpomerantz I’m not sure about your DAC but the ultraDigital has dip switches for different i2S configurations, so you might find that yours is viable. It defaults to the PS Audio i2s but supports other options.
So far I’m hearing a fairly big difference using i2s via the Sonore ultraDigital, most notable is the soundstage moving forward into the room. I prefer a more recessed presentation so I’m not liking this aspect of i2s. But it’s more detailed and a little more dynamic. 
The Terminator sounds best with I2S vs USB but the USB and or I2S cable makes or breaks the deal.  I use an Iris between my server and Terminator Plus.  I spent more each on the power cord and I2S cable than for the Iris but its all about what you need to do to get it right.  The Terminator responds well to  I2S cable upgrades.
@anzaanimalclinic - what I2S cable are you using? I read such mixed opinions on HDMI cables (no different than with any other cable, I guess), that I went cheap and bought an Audioquest, it's a 'Cinamon' I think, but I'd have to check.