THX/SP200 clone or not, makes absolutely no difference on my purchase decision. Based on specs and ability to opamp rolling, it’s a sound purchase for budget minded individual. I don’t expect it to rival my 2K tube amp. But as far as SolidState amps go, it should satisfy most headphone enthusiast. And for ridiculous $159, this might be the best deal of 2020. It might be possible to get some positive sonic benefits by swapping Op-amps for something more exotic like Burson Audio Supreme Sound opamp V5i (Drop should try to get those at discounted price BTW) but that’s very subjective as we all perceive “musicality”/accuracy differently.
Dear DROP, pls try to source out quality opamps for our tweaking pleasure. It would be greatly appreciated. 👍