Easy to install in the bridge (use the supplied self adhesive tape). Since the gaps in the bridge of my bass were pretty large I had to add some custom bit of copper tape to make the pads fit snug. The sound quality lacks in clarity compared with using mikes, but very suitable on stage, especially since the risk of audio feedback is reduced a lot.
The jack socket and velcro mounting are very cheap, self adhesive velcro does not attach well, the quality of the jack socket is poor.