ASUS Essence STX II Internal 5.1 Channel PCI Express Sound Card

The ASUS Essence STX II is a PCIe sound card for desktop PCs, designed for high-fidelity audio playback and recording. It supports 5.1-channel surround sound with 24-bit audio resolution. A 124 dB signal-to-noise ratio on the line-out reduces background noise, and the frequency range of 10 Hz to 90 kHz maintains signal clarity. It serves as an alternative to integrated motherboard audio for users requiring high-resolution sound processing. The card installs directly into a PCIe slot to handle digital-to-analog conversion.

The card features a dedicated headphone output and a standard analog line-out for speaker systems. An integrated S/PDIF output provides a digital connection for external receivers. The hardware uses 24-bit/192kHz digital-to-analog and analog-to-digital converters to process high-resolution files. It is compatible with Windows versions from XP to 8.1. A 3.5mm audio cable is included for connecting to standard equipment. For recording, a line-in port is available with a 118 dB signal-to-noise ratio.

• 0.0003% line-out total harmonic distortion — minimizes signal alteration.
• 24-bit/192kHz ADC — enables high-resolution analog-to-digital recording via the line-in port.
• Dolby Digital Live — encodes multi-channel audio into a bitstream for S/PDIF output.
• Dolby Headphone — simulates a surround sound environment through stereo headphones.
• PCI-E host interface — provides an internal connection to the motherboard for data transfer.
• Dolby Pro-Logic IIx and Virtual Speaker — provides processing options for stereo or multi-channel audio sources.