A simple amp with a modest set of bookshelf speakers, a powered 10 inch sub and a Echo in the 700-1000$ range will blow this out of the water. I LOVE THIS COMPANY THANK U ! I decided to go into our wireless routers settings and set it to use only Channel 11 (not AUTO) then set the U4 to Channel 1 so they are on opposite ends of the WiFi channel range and this tweak finally made everything work! They were extremely nice at first, great bass, comfortable fit and all, but two problems. The sound is amazing, and you can definitely hear that extra bass. - Controllo della musica riprodotta da cellulare (anche del volume), che funziona per gestire sia l?app di default, che con applicazioni come spotify. but I love them and are look so good on. terrible Based on other reviews and the fact that they don?t do halves I got a size 9. After tRecently got put on front door duty at my job which is essentially a brain dead post, decided to finally get a set of wireless earbuds but I was not about to pay 150+ on AirPods.