Design-wise and durability seem to be great! Super solid, a little bit biggie.
Sound-wise, my ears tell me that it cuts a lot of the body of the sound. Compared to the Boss versions, I think the Boss ones keep the sound fullness. This seems to cut a bit of volume, low, mid frequencies.
It's cheap, does the job, but don't expect a sensational sound. It works and sounds decent, but you loose a little bit of the overall sound quality.