Hmm... I'm sure it was brought up before, but that's a Sijosae MHHA v3.0 (Multi-Hybrid Headphone Amp). As far as I know, Sijosae is in Korea, not China, guess somebody else building them with his design.
D/ We are the original designer; it sell hundreds and 100% positive feedback in history!
Variation on a theme, perhaps? Without analyzing the schematics, who knows?