Unfortunately the Teac doesn't have a digital out.
That may or may not be a negative. If you have a top of the line DAC already and want to use it, then obviously it's a negative.
I considered buying a streamer only (Lumin U1 Mini) but my thought process was that having it all in one box eliminates a power cord, a set of interconnects, and that DAC technology is somewhat mature now, while streaming technology seems to still be evolving.
The TEAC sounds better than my BlueSound Node 2 did using my Auralic Vega (which was a $3500 DAC when new) as the DAC. I don't miss the transition from the DAC in the TEAC from the Vega. I'll never know now, but I doubt the U1 Mini / Vega combination would have been better than the TEAC and it would have been more expensive.
I feel like I got more bang for my buck with the TEAC and am very pleased with the sound quality.