HRT builds high quality audio interfaces (aka USB DACs and ADCs) that bridge computers & iDevices to home entertainment systems. Their mission is to bring Sonic Integrity to the Masses by providing a solution that gives people better quality sound from their computers & iDevices at AFFORDABLE PRICES. Apple Approved. High Resolution Technologies is a specialized manufacturer of high quality audio interfaces that bridge computers & iDevices (iPads, iPhones, & iPods) to users’ home entertainment systems, turning computers & iDevices into Great Sounding music sources. All of their products are designed and built in Southern California.