Here is a Head-Fi review that seems to suggest the SH-9 sounds good -
https://www.head-fi.org/showcase/smsl-sh-9.24823/
Here are the SMSL reviews that also suggest to me a good sound.
I would throw up Zeos review but I tend to find him liking nearly everything these days and I am not sure how critical a listener he is. Still learning about him. I am not stating these to dispute your claims but showing that there are reviews saying the SMSL stack is good. What I would love to be able to do a test them but I am already in a budget and to give 20% of my purchase would cause me to be out of money after reviewing 6 units assuming I keep one. I simply cannot afford that.
I am stuck listening to reviews and the help such as all of you have provided.
Could I ask for some assistance in detecting what the loss of sound? I would love for someone to also teach us new guys with their reviews a bit more. For example, if faster tones cause a loss of other tones, could you provide a song title you used to discern that? I would love to amass some music for testing and music I might like anyway. It would be very helpful. Should I get the opportunity to test, I could run that song and hear what you are saying occurs.
I have a question. I heard that tube amps add harmonics that are not in the original music. Does the Audio-GD amps add frequencies that are not stored in the music being played? If it does, is music more enjoyable to be accurately playing what is there or to be modified to become better than what is recorded? Is there any possibility for it to make some songs worse? I will make an assumption as an example here. If an amp adds harmonics that are reminiscent of being in a large open auditorium or cathedral. Is it fair for every song to sound like it was recorded in that space or should the song sound smaller since it was recorded in a studio, for example. OK, maybe a poor example but I ask which is more important to all of you, accuracy or reproduction or musicality? Right now, I want to hear all that is there. I am not sure what I feel about the addition of sound/harmonics.