High Quality Material: The sound extractor converter is made of iron box material, which is sturdy and durable, with three EDID modes: SETTING (AUTO, COPY and STD). Versatile: The HD multimedia interface sound extractor supports digital and analog sound extraction output, supports analog sound PCM 2.0. Supported Optical Sound Pass Through Formats: For LPCM 2.0/2.1CH, for Dolby 5.1, for Dolby True HD, for Dolby DD+, for DTS 5.1, for DTS‑ES 6, for DTS‑HDMA 5.1, for DTS HD‑HRA 5.1. Support Video Transmission Signal: Signal up to 4K2K at 50/60Hz YCbCr 4:4:4, from 2 HD multimedia interface sources to 2 HD multimedia interface simultaneous display. Flexible Control: The sound extractor is controlled flexibly by panel buttons and remote control, and the corresponding LED indicator on the front panel will light up.