The VIA Envy24HT VT1721 is an audio controller chip developed by VIA Technologies. It is designed to deliver high-quality audio performance and support for various audio applications. The Envy24HT VT1721 offers a 24-bit resolution and a sampling rate of up to 192kHz, allowing for accurate and detailed audio reproduction. It supports multiple audio channels, including 5.1 surround sound, making it suitable for home theater setups and multimedia applications. The chip features advanced audio features such as hardware-accelerated audio mixing, digital effects, and support for various audio interfaces, including S/PDIF and MIDI. The VIA Envy24HT VT1721 provides a reliable and feature-rich audio solution for both consumer and professional audio applications.