Weird question
But how much more detailed are your Salon 2 vs KH150?
Thoughts on Hearing Details
A key requirement in hearing details is the S/N of the listening space. Using the NIOSH application on an iPhone 13 my media room has a S/N ratio of about 28 dBA, setting the phone on the table where my computer is located in another room NIOSH shows about 30 dBA. The NIOSH application is free. I've not idea how accurate the NIOSH applications is and I haven't calibrated it to some known good source. The S/N ratio in the kitchen is a few dB worse, likely due to the refrigerator and large windows to the outside.
At least one Individual on these forums has reported that the background noise level in the location where they listen is 40dB or so. This may be in a great room that is connected much of the rest of the house.
The teenage daughter of a friend of mine at times comes to the house for dinner and complains that the house is too quiet.
At times I want to hear if the HVAC system is running. If I just listen unaided in the kitchen I can't hear to noise from the return air register down a hallway. If I cup my hands and face in the appropriate direction the effect sensitivity of my hearing in that direction is increased and I can now barely hear the register noise.
If you want to hear details, you need a quiet environment.
I really don't normally pay attention to details, both of these speakers just present sound without calling attention to themselves. That said, here are few examples of details.
Note: the front and back walls of the media room (double, insulated 2x6 walls, double 5/8" drywall) are treated for broad spectrum sound absorption. In listening to solo piano music from the Salon 2's, the end of a sustained note at even the lowest level is audible. The quality and tuning of concert pianos is amazing. The raising of the sustain pedal is audible. Another example, between movements of a selection, the shifting of the orchestra in their seats in audible. These sounds don't intrude on the performance, they just mean that humans and physical instruments are playing the music. I've no idea of the SPL of these low-level sounds, but the Revels certainly reproduce them.
When a hammer in a piano strikes a string (or two or three strings) the impulse is transferred to the bridge which transfers a small impulse to most or all the strings. This can be sensed with a hand on the strings. This event creates a very complex sound that rapid transitions to the vibration of the strings that were actually struck. Subjectively of course, I've always felt that the Salons do an excellent job in reproducing this complex, percussive sound and the transition of the note's strings vibration, which varies between recordings/pianos/musicians. Part of this result may be from the full frequency range of the Salon's plus numerous design details. The very quiet room allows all of this to be heard.
Again IMO, Violins are well produced by the Salons. The instrument sounds to me like a bowstring moving over the violin's strings, not just some unified sound. This could of course be my imagination.
I use the KH150's as pure computer speakers, which is no doubt overkill. The KH150's disappear even with about a 30-inch listening distance. Disappearing is to me an important characteristic of a speaker. Mono signals are located dead center between the speakers. The location of the KH150's well away from walls means that the bass isn't really strong, but that is to be expected due to their location. No doubt I'm getting everything that the content provides although often that content is YouTube. The DAC is high quality. I rarely listen to quality music sources on this system because I can do that in the media room.
I hope the above is at least slightly helpful although it mostly answers a question you didn't ask. There is little to no discussion of the S/N ratio of listening locations on the various forums. An excellent S/N ratio in a space is a requirement to actually hear how well an audio system is performing and IMO, for full enjoyment.