I bought 5 guitar preamps from a retailer on aliexpress, all 5 were faulty, just useless fakes. Never had replacement nor refund. Aliexpress customers service told me they gonna do something, I sent them evidences of the defects and a letter from Fishman, the brand that had been counterfeited, prooving it all. But nothing ever came. And the shop is still selling the exact same crap to the whole world without any problem while aliexpress perfectly knows it's crookery... so don't trust the rates and reviews on aliexpress plateform, they are obviously fakes.