RME ADI-2 PRO: Do I need FS version?

[dunc25]

Hi guys! I'm about to get my Dutch 8C and a RME ADI-2 Pro as its preamp. However, I find out that is has a more advanced and expensive FS version. Is this necessary upgrade for music listening? Or it's more intended for music professional works?
I'm also planning to use it as DAC/AMP for my DCA Aeon Noire. How is it compared to, say, Topping D90/A90 combo?

Hi. Did you go with the RME ADI-2 Pro-Dutch & Dutch 8C pairing in the end?
If so, how well did it work for you as a preamp? Is it easy to switch between sources? How many sources are you able to use? Does the digital volume control work well? And does the digital volume control attenuate the volume sent to the 8c via the RME's AES digital out?
Thanks!