Gentlemen...and I use the term loosely, please stop the ad hominem!
Now, to the crux... I have a Room Perfect in my system:
Sources: Vinyl, SACD, CD, Tidal, Amazon Prime, Digital downloads
Electronics: Benchmark DAC3, Room Perfect, AHB2 x 2 Bridged*
Connections: Benchmark balanced except Vinyl unbalanced , Neutric speaker connects
Speakers: Harbeth 40.1s; Stacked Quad 57s by Quads Unlimited
The system, pre-Room Perfect, I think sounded pretty good, despite the weird room: 24 x 14, vaulted ceilings, large opening in to living area, tons of LPs and CDs along one wall... you get the idea.
I had an opportunity to acquire a previously loved Room Perfect at an affordable price. I installed it (a bit of a pain in the Asp) and voila!, Noticeable difference. The various bumps and dips in the spectrum were smoothed out per my crude graphic display on my MacBook Pro .
To my notably ancient ears, the quality of my musical appreciation was enhanced... I confess my A-B efforts were/are sighted...nonetheless, It will have to be wrenched from over my cold, dead body** before I relinquish the Lyngdorf!
* I like lots of headroom.
**There are those that would like to do that... especially ex-wives and paramours, though not particularly because of the Lyngdorf.