This was my experience in a dedicated music room with substantial acoustic room treatments.
I later paired the Lyngdorf with speakers ranging from the effecient Living Voice OBX RW, AZ Crescendo, Tekton Double Impacts highly modified and the Dali Epicon 6s. The Lyngdorf paired wonderfully with each speaker and still remains in my system.
Uncanny way of playing equally well at low and loud volume levels. Amazing how much noise is in our music that goes unnoticed until one uses a unit like the Lyngdorf 2170 or 3400. Lyngdorf’s SOTA room correction brought out the very best of each speaker in my listening spaces.
I tried using the 2170 as a preamp/room correction device only with several tube amps, but each time the 2170 sounded better on its own. Keep in mind this is my subjective experience and preference. However, I love tube amps and preamps having owned and enjoyed all manner of them over the decades. OTLs, SETs, PP and SEPs. I find the 2170 with room correction optimized just sounds like music.....not like tubes, not like SS, not like Class D, not like Class A.........just enjoyable.