After about 2 weeks of use, time to post some impressions here.
I’d start saying that it is the first time that an upgrade of my system has a so holistic impact on its signature, that it eludes my usual tendency to break down analytically the modifications in terms of the various typical audiophile parameters.
The HMS has, simply put, transformed the sound of my rig into a different – better – one. And for “better” I mean that the sound just seems more “real” to my ears. As I mainly listen to acoustic music, for “real” I mean that the timbre is more
right, the timing, decay, resonance of harmonics is improved, presence and ambience are improved.
All this, combined to a significant reduction of non-natural artifacts like glare, brittleness etc., produces an overall more physically consistent and way less fatiguing listening experience.
The music just flows better. When I plugged on the HMS my very first impression was that the music I used to know well seemed slightly
slowed down, like a slight bpm reduction ...
The extent of the effects of the M Scaler varies depending on recording quality, type of music etc., but it is quite dramatic in the majority of tracks I have (re)listenened so far.
I have initially taken notes about what I was hearing on a track-by-track basis, but soon the picture has become so clear and consistent that I stopped that, since any new song gave me the same impressions of what the HMS has brought to my audio system.
Some highlights.
Acoustic vocals: they are so much truer to the flesh and the vocalists are so much present with the HMS in place. Previously heard sibilance and glare are nearly eliminated.
Guitar (especially classical) and violins: much richer harmonic structure, easier to follow the attack and decay, less strident / metallic timbre.
Low-level details become at the same time more obvious and natural, i.e. not portrayed with a hyper-realistic / over analytical / distracting character.
Depth of field, ambient cues readability is improved with respect to solo DAVE.
Applauses from a crowded attendance or hand clapping in a flamenco or jazz track (one of my benchmarks for naturalness, while not being directly part of the music) become less shouty, harsh or one-noted and reveal the human nature of the sound source
I struggle to identify a single drawback after the HMS took place in my rig, perhaps I am still under the spell of the new toy syndrome, who knows ...