I bought this unit for my practice drum set. It does what it says really very well. The setup is very easy and fast, everything works out of the box and the quality of coverage of the whole drum set is really unbelievable. If you look for "cheap" and easy way how to get your acoustic drums in your headphones together with some backing music for play-along, this is in my opinion the best and simplest solution you can get.
Pros: small, easy and quick to assemble and disassemble, works as advertised, much cheaper solution than to mic the kit the standard way
Cons: worse coverage of bigger kits (e.g. two floor toms, lots of cymbals), but that is basically not what this product is made to cover, IMHO you don't need to have big rig to practice and experiment
I'm writing this review almost a year after the purchase and I can totally recommend this to anyone who is not looking for a full blown studio drum mic solution.