Panlong Digital Optical Audio Switch Splitter 4 In 4 Out Toslink Matrix Switcher Selector 4x4 with Remote Control 4 Inputs / 4 Outputs for Optical SPDIF / TO Slink Audio Management; A True Matrix for Any Input to Any Output Active IC Circuit (not a mechanical switch) for Optimal and Lossless Signal Transfer; Reliable & Flawless Switching Supports Output Distance Up To 30 Meters (100ft) (Using optical fiber cable loss less 0.2Db/m) Comes with Remote Control or operates directly by pressing the button Built in Durable Metal Case with Ace Deal One Year Warranty