I was a bit disappointed with this purchase. As is with a lot of Cajons the snare sound is a bit poor. I chose this one based on reviews because the snare was supposed to be good but I just found their wasn't enough response and I get more wood sound than snare. The snare on this is made from a snare drum snare cut in half and mounted against the inside front of the box. There's no real adjustment to change the sound. The snare coverage could probably do with being bigger to enhance the sound and this is something you might be able to do yourself.
Often it takes a while to soften the Cajon up so that the snare becomes more responsive, but I haven't really found it with this one.
Bass sounds great from this instrument though and the box is definitely a solid build, I also bought a protection racket case to go with it which is very useful with the rucksack straps.