This is the type of thing you have to test out in person
Like any other expensive name brand speaker dock system, you really need hands on time to evaluate. If you intend on obtaining something this compact, there's really no other way. It's not a very commonly sold device, that much I am sure of.
FWIW, the retail price seems quite high vs going online and getting a proper surround system (likely for less $). When I say 'proper surround', I mean at least having the ability to go beyond what a tabletop device can do, and be able to physically separate speakers to produce a better sound field.