I'm not familiar with the brand or the product, so I can't help you much there. Your sig indicates you have one of their products, so you may be able to comment more than I. A fully Chinese import that appears to be more than Fiio, for less money than Fiio, which is also a fully Chinese import gives me a moment of hesitation, and most of the commentary on the device seem to be commenting on the function as a DAC more than as an amp, so I'm not sure what to make of it.
On the surface, it's discrete FET, 2ohm output impedance, Wolfson chipset, and attractive. On paper it all seems like a good deal. But I'm wondering what the catch has to be at that price. If there is no catch, and if you like the quality of your existing product from them, it's probably a good deal!