The HR-S101 is a combination of the bible-sized USB DAC Amplifier, AI-101DA and a pair of LS-101 speakers, designed all-in-one for the next generation, who mainly use a computer and smartphone. The AI-101DA allows users to enjoy both high-resolution audio streaming from a computer, and high-quality wireless audio streaming from a smartphone via Bluetooth® aptX® codec. In addition to a USB audio input and Bluetooth® connection, the AI-101DA also employs a pair of optical digital audio inputs and an analog audio input for traditional audio players like CD player or portable audio player, just in case. The secrets of the next-gen audio system are not only the versatility of its audio inputs, but the tech under its aluminum skin utilizes the latest DSP-based technology “HR Loudness” to maximize comprehensive sound performance, combining the AI-101DA and the LS-101. The AI-101DA’s compact body enables convertible layout, horizontal or vertical to fit with tiny space near TV stand or STB, while TEAC’s iconic side guard bars give a professional finish.