Help with Bricasti M3 -

I just bought a Bricasti M3 with MDX Board running v1.08. I will upgrade the firmware as soon as I can arrange it with Bricasti.

I am confused on the 2 different music paths... between NDSD PCM and DSD.

I have a large Digital Library on an external drive connected to my desktop PC, which is connected via Wi-Fi on our Fios 2GB fiber connection. I am using an Orbi WiFi extender to output a CAT8 cable to the connection on the M3.

While when I switch filters between Minimal and Linear - I hear a difference in presentation ( as I mostly listen to Jazz, I have found I like the minimal much more).

Switching between PCM and DSD does not seem to make any change at all.  No momentary lapse when making this change ( I have the remote) leads me to ask, "is it working"?

I have a lot of DSD64 files, as well as every flavor of PCM from 192/24 down to 16/44 

I have tried switching these "on the fly" with both types of files but cannot hear any difference at all...  Is there something I am doing incorrectly?  Any tips would be greatly appreciated!

I have a VAC Signature Mk2 SE Preamp, PassLabs X250.8 and B&W 803D4’s for 2 Channel Music with a Rythemik EHP15HP2 Sub.  I am also considering to add a EtherRegen 

Same system for HT- I have a Marantz SR8015 which serves as PrePro  and a PassLabs X5 driving the center B&W HTM82D4,  my old N805s for Surround and CDM5’s as Rear Surround and a Rythemik E15HP2 sub (connected to the Marantz for LFE in theater and Using stereo Line out XLRs from the VAC for music)