Thanks, but I didn't really take the comments as a slight or w/e, so no worries. Plus unless you're a snob or self accredited elitist, it's just a hobby forum for fun and thoughts last time I checked, no prerequisites and certifications or technical structures or formatting are necessary or required to post... take it as is or skip it, simple as that.
And no, I probably would not classify the SM3 as a pure and true neutral phone (though I wouldn't completely lambaste it as non-neutral either), it has a slightly more mid-centric and bass focused tendencies, while still keeping the treble full and intact. I was using the SM3 as an example because it's the phone I've been using the most recently and also a phone that a lot of people have used, so for those that have heard them can draw some connections or vicarious relations to the experience.
That said, the amp itself, I would consider pretty neutral, in that it keeps all those qualities of the SM3 intact, just gives them a little booster chair... or like 2-3 inch heels on a girl (assuming that you like girls). And in the same way those heels makes a girl's ass a little firmer, tighter, and bang, the Leckerton kind of does that to the phone's sound, adding a bit of additional clarity to the sound, firming it up which by doing so, indirectly gives the illusion and satisfaction of cutting out some of the fat or in the SM3's case, thickness.
The difference while noticeable, is subtle and probably wouldn't really result in a double take if you weren't already familiar with the phones, spent a lot of them with either of the toys, or specifically sitting down to a serious analytical/review session. It's not quite as evident or neck breaking like a girl in 5+ inch heels walking pass you in a mini-skirt or tight leggings.