Although the quality of the sound, range and simplicity of the 590a speak for them self, there is one area that all reviews will never tap into and that is usually the durability and the overall quality of the product. The huge minus for this product is the very cheap plastic that they have used. I have had this pair for slightly over a year and the only thing keeping it together is the epoxy mixture, lots of patience and forgiveness. So if you love sound and don't mind applying epoxy every couple of months, or if you want to give someone a gift that will eventually upset them, then this is a BARGAIN!!!