The amp for the price and size is well worth the price and mounted in my pvc pipe with eaze at 3. As always, their products live up to expectation and more. I also have photos. In my situation, I needed to use a washer in between the rail and the sled bottom for proper clearance to slide smoothly. I still find this a little hard to understand as the headphones have their own little amplifiers so in theory should be able to amplify sound to what ever level they wish. I?ve since paired it to an iPhone and an iPad without problem as long as the right earbud is out of the case. The sound quality is average. If your lucky and patient enough to get them installed they work great. You should get one if you?re into using your MagSafe phone. Easy set up.