PSI Audio AVAA C20 Active Bass Trap Acoustic Absorber???

Hello, Looking to tame an occasionally annoying bass node at about 80hz.
Does anyone have experience with this Swiss device by PSI?

I have been considering other bass absorption traps (tube traps) but location and placement is problematic.

I have stereo REL Carbon Special subs which integrate nicely, yet still boom at a certain spot on some tracks.

I have also played with Roon DSP but not my first choice.

My speakers are YG Hailey 2.2's, with Audionet amps and preamp and Mola Mola Tambaqui DAC.

These units are not inexpensive at $2800 each, and a room my size may need at least 2 or possibly 4 of them, but manufacturer claims way more effective than bass tube traps.

Any experience or thoughts appreciated!