A. L 2 Sorry for the review in English. Please use Amazon's translator. But this is something you all should be aware of. This item is imported directly from China, and it bears no product safety mark.Moreover, the sound quality is quite bad compared to directly plugging it in. I got a lot of grainy noise. It is fine if you are just doing click tracks or some simple sounds... but for vocals, especially with FX, the fidelity of the audio was very poor - a lot of signal loss.