Lack of bass compared to Sony, I agree. Which is understandable and the material is pretty easy to clean. Product was good except advertised with weights! Dont know why the description still mentions CL15 but then you can run this at CAS15 at a lower frequency. I have had no complaints from anyone on being able to hear me. The pairing for me was not easy as I paired the F9 to my phone but it only paired one earbud so I started over and the label for the earbuds are F9L and F9R. After some typical internet searching, I settled on the Samson G-Track Pro because it was described as, "the Yeti killer. Its sooo good! I?ve already used it every day since it arrived Monday and recommended it to my friend and even my neighbor. The 9 fit fine.