Use - playing in a duo with two guitars, two singers, and drum machine - small bars usually. Paired with two Alto 308s. The amp for the tops is not used, just the sub amp, so cannot comment on that aspect of the product.
Pros: small and easy to handle, adequately enhances the bass to give a balanced full range sound to our little gigs including the incidental recorded music. Seems to be very tough.
Cons: for my purposes, can't think of any. However, anyone expecting to use this sub for any purpose where a lot of volume is required is going to be disappointed. It's not earth shattering and you can get it to distort if you are heavy handed with the input or controls. Lack of volume has never been an issue for us.
Conclusion: used as intended it has so far been faultless, Recommended.