Experiences by Owners of Lyngdorf Integrated Amps using the Room Correct feature

Now to answer the OPs question and stay on topic. Yes the room correction feature can improve the sound in a given room with many different speakers. It certainly did with my Acoustic Zen Crescendo and Harbeth 40.1 speakers. I also know of 2170 owners that did not realize the same degree of improvement as I did. It will really depend on several factors. Here are a couple to consider.

If you have taken the time to fine tune your speaker placement using set up methods such as Sumiko, then the RC may not yield as much improvement. However, if your listening space is not a dedicated room and the speakers have been placed out of the way to please your spouse, then RC can help greatly.

With the speakers I mentioned above the bass became more full and impactful. Without RC the speakers sounded a tad thin through the mid-bass. RC gave me more of a full bodied sound which I wanted. Now here is where the subjective aspect shows up again. Others may have liked the leaner sound more. Our impressions and experiences always have a subjective aspect to them. Always.

In another room the RC feature helped the 40.1 speakers sound less muddy and thick. It just going to depend on your speaker, room, and listening position. All shared experiences will likely differ. 

The only way for you to really know is to trial the unit in your room with your speakers. This is the ONLY way for you to really know for yourself.

What @bjesien is not understanding is all of audio is subjective and our experiences will differ. So many variables are at play such as, but not limited to:

- personal sonic preferences

- total system synergy

- room differences

- attention or lack of attention to the details of assimilating a new piece of gear into an existing system

- attention to the details of ancillary gear such as footers, cabling etc...

The 2170 is a wonderful piece of gear that can indeed sound wonderful in many systems and to many people. There have been many reviewers and owners that have shared their positive experiences so we know this is fact. Others did not realize the same outcome. Good to hear from all people and experiences. No need to "run" from folks sharing positive results. No need to "run" from folks like @bjesien with negative results. Frankly, we should do the opposite and learn from it all.

Just because one person’s experience with a piece of gear is negative does not mean the other positive experiences are somehow not valid or worth listening to. Too many reasons behind why we may have differing experiences with the same piece of gear.

Yes we music lovers and audiophiles do buy new gear over time and enjoy sharing our experiences. I liked my 2170 over the 4.5 years I owned one. I now own a wonderful new Circle Labs A200 that I am enjoying greatly.  As the years go by audiophiles do move on and buy new gear. 

Just to clarify, the 2170 is not lean sounding by nature.  It is a little on the warm side in terms of sound personality.  It can be part of a system that sounds a bit lean based on the room, associated gear, and the various other factors I mentioned above. I would not call the 2170 lean sounding on its own.