I just bought this article so my review will moderate over time. But I must say that I am completely satisfied with this product that seems very good and I can only recommend. The product seems solid, and the sound is very good (tested on optical output of a high-end Samsung Smart TV). The finish of the product is very decent and gives the lie to preconceptions about the Chinese products. In addition, a very decent package with protections for audio inputs and outputs, and the ability to verify the authenticity of the item (against infringement) demonstrates the seriousness of FiiO manufacturer.