Well, the uDAC-2 uses a Sabre chip, but I don't think there is anything else like this that uses the ESS9018 part, the particular unit in this product.
It does look quite interesting, its slightly longer than the Sparrow, but the width and height look the same. It also lacks any analog input, so I would say that this should actually compete with the Sparrow, which might mean a relatively low price point.
The Fun is a much larger unit with the previously mentioned line level input, so maybe he will provide something in the Fun chassis with a similar setup.
Its a pretty hilarious product description though with "[size=small]If you are dread come out in the wash of the music files , choice other gears like applied WM8741 will be better "[/size] which makes me think that its more a more revealing unit in comparison to the Fun/Sparrow.