Good sound improvement for smartphones or use in csr
I have used this product for months now and inreases volume, clarity and punch to sound of smartphones. I am now using this unit in my 2007 Mini R56 Cooper S through the aux 3.5mm in jack input so I can use Bluetooth of smartphone on my Spotify account and power via cigarette socket, USB power adapter. The battery life can be limiting factor otherwise as I routinely get 3-4 hours from a full charge. The sound is very good for its size, build has not been an issue to me and had no problems. Midrange is it's strongest point, bass is bigger but not bloated to me. It could do with a little more punch but that really is being picky. The treble is not the clearest, but to my ears it strikes a good balance to provide enough sparkle without becoming too wearing. Overall, a good little unit at Drop price paid.
Would recommend to a friend.