The SQ-DAC-2121 is a Digital-to-Analog audio converter. It is designed for SEQUOIA Signal Processing Platform. The SQ-DAC-2121 converts one balanced AES3 or unbalanced AES-3id digital audio input into four balanced analog audio outputs (two groups of stereo audio outputs). It supports adjustable output gain and indicates the input level through the LED indicator at module edge. LED indicator on module edge shows the status of signals, and the ADJ switch can adjust the parameters manually. Module with independent rear panel can be used in SEQUOIA 1RU or 2RU frame. The SQ-DAC-2121 supports the function of network monitoring of SEQUOIA series platform. The module can be controlled and monitored via SEQUOIA network control module and SQ-MASTER platform control software.