“This is my second CIEM after purchasing Rooth's LS2. I own the Shure 535s as well. My sources as are iPhone 5C and Sony NW-F880, no amps. The LS4 has two bass drivers, so obviously this isn't for people who like monitor like sound. The bass is not overbearing, yet enhanced. There is a nice deep rumble, but not to the point where mids and highs are drowned out. The LS4 manages to...” --Yamato1
Our Fusion model provides a "full range" of sound, with excellent highs, mids, and lows in these speakers. Fusion for SmartPhone comes with a full-control mic for iPhone, fabric, tangle-free cord, and 90-degree gold-plated sport jack. Note: this microphone also works with other SmartPhones that accept direct-connect 3.5mm jacks, but click control function may not with all SmartPhones.