Pro-Ject Pre Box S2 Digital: MQA HW decoding at reasonable cost -Anyone have this?

You can do that but you'll not be able to take advantage of the MQA "enhancement" if the content is Tidal Masters. 

IMHO one of the biggest letdowns on the Bluesound products, (node, vault etc) are their built in DAC,s. They are mediocre at best, I forgoe the full MQA effect and much prefer the SQ going spdif into my Lyngdorf.

Following up on my own comments of 07/09
POWER SUPPLY: Adds a little dynamics, slightly punchier drum kicks, maybe a hair smoother presentation vs not using the power supply (which is only an option when using a USB cable).  I won't bother with using the power supply, as I'm happy with the sound as is, but if I had no pre amp and were playing straight to an amp with the S2, I would use the power supply. Caution: the one poor quality component on the S2 is the power supply connection...its thinner than an iphone connection...looks like it can damage easily (which has been commented on in other reviews outside of Audiogon), so if you use it, better be ultra careful about connecting, disconnecting or accidentally pulling on it. 

Bump, thanks for explaining this dac and specifically mqb. My roon streamer recommends using software for the first unfold and the dac for 24/192 and above which displays mqb. Changing the settings for the s2 to handle both first and second layer gives a mqa display but with my streamer playback volume starts to drift as if someone is slowly turning the volume down and back again.