Preamp output impedance, Amp input impedance and drive ratio? Pass Labs XA25

Where you might have an issue is gain. The XA25 is spec’d at 20dB gain, which is on the low side. With your Placette passive, and maybe with some of the others you listed, it’s possible you’ll find things a bit anemic. 

Yeah for now since it's my secondary room I'm trying to use older gear to start as much as I want to buy more gear lol.  

Schiit Yggy DAC is primary source for now going into Placette into XA25 to Acora MBR-1 speakers.  Then see what it sounds like!  Loving my VanityPro HDMI audio extractor to AES XLR into Yggy for TV audio.  M4 mac mini USB into Yggy for Roon.  Phono down the road.  Waiting for more DACs to input I2S input so I can play my SACDs.  

Its all about gain.

This forum is full of "info" that simply muddies the waters of music enjoyment. Example: Did you know that respected (!) professional gear reviewers often live with ZERO room treatment? For SHAME! Impedance matching is fine to obsess over if your compulsion runs in that direction, but I’ve never done that because it simply never seems necessary...chalk that up as a non issue, lessoning stress and lengthening my life. I switch between a single ended tube amp (handmade Dennis Had with few published specs) and a Pass XA-25. I don’t know if those "properly match" my trusty Schiit Freya but when listening to these amps I never think, "man, sounds great but does the impedance balance?" The compulsion to pontificate with a display of alleged vast knowledge of audio minutia might help some with those pesky insecurities but does it make violins sound more violinny?