Hello, this is gonna be my first review in here. Beforehand, I wanna say many thanks for all parties involved, which is LetShuoer, Hifigo, and lastly my fav reviewers, Zeos. This unit in particular was given to me as a prize from Hifigo x Z-Reviews' last month Giveaway, I am one of the three lucky ones who was chosen. My unit is not numbered, instead engraved with my name/initials that is DER, so I believe mine is more limited lol 😂 - Build Quality: I've had S12, and these are basically has the same build quality as it's original- top-notch...