Uberwaltz,
The 2170 will read the correct incoming sample rate, so if you click "info" on a 24/192 (MQA) is will indeed say 24/192, but the 2170 will then resample the MQA to PWM (24/96) before the final output, as it does with any incoming signal. So you're getting resampled MQA.
My Aries Mini, which had a BETA firmware installed, was MQA capable with it's internal DAC and would do a full MQA unfolding. I'd send MQA to the Mini, and then singled ended out into the Lyngdorf's unbalanced input. I did not like the sound at all. I'd send the same MQA file through the Mini's digital out into the Lyngdorf and the sound was a bit better, although there was no MQA unfolding, since I was using the Lyngdorf's DAC. So I ended up just playing the FLAC files (Mini digital out to 2170), and to me that sounded better than MQA
Before the Lyngdorf, I had a Hegel H160 and did the same test. This time, using the Mini's DAC and playing MQA, going into the Hegel's unbalanced analog input, the sound was always superb. I always preferred the MQA version, over the normal FLAC.
Hope that makes sense. ramble ramble