i hade my W7 installed by them for the warrenty purposes....all i can say is they built the box for my firebird...it was a very professional job and they are all about customer satisfaction......the owner said if i didn't like it after 2 weeks come back and he will take it out and give me something else. even with to small of an amp to push the sub i haven't taken it back.......i would give them 4 out of 5 stars......only dislike is the selection they have but i noticed they are working on it.