I bought this product as a trial really, I'm a drummer and thought I would try this along with a set of in ear headphones to aid my hearing. The quality of build is excellent, the finish on the pack and the transmitter unit is excellent and the bonus of rack mounts being supplied is great. My only disappointment is that the system struggle with bass, when the music has high bass levels it tends to lose the signal. However I think this is good as it protects your hearing, it could be countered by buying a butt kicker if you are a drummer but the range of sound available is still more than acceptable.