Asus PCIe 7.1 Audio Card Xonar DSX(ASM) Wolfson DAC

General Overview

• Model Name: ASUS Xonar DX / XD / A (7.1-channel PCIe Sound Card)

• Part Number: XONAR_DX/XD/A / 90-YAA060-1UAN00Z

• Form Factor: Internal PCI Express x1 card (includes low-profile bracket)

• Bus Interface: PCI Express x1 (compatible with x1/x4/x8/x16 PCIe slots)

• Audio Channels: 7.1 channel surround output

• Operating System Support (Legacy): Windows XP, Vista, 7 (official) — modern compatibility depends on driver availability.

Audio Processing & Codec

• Primary Audio Processor: ASUS AV100 High-Definition Sound Processor (supports up to 24-bit/192 kHz audio)

• Digital-to-Analog Converters (DACs):

  • Front L/R: Cirrus-Logic CS4398 — 120 dB SNR, up to 192 kHz/24-bit

  • Other 6 Channels: Cirrus-Logic CS4362A — 114 dB SNR, up to 192 kHz/24-bit

• Analog-to-Digital Converter (ADC):

  • Cirrus-Logic CS5361 — 114 dB SNR, up to 192 kHz/24-bit for line/mic input

Audio Performance

• Output Signal-to-Noise Ratio (A-Weighted):

  • Front output: 116 dB

  • Other channels: 112 dB

• Input Signal-to-Noise Ratio (A-Weighted): 112 dB

• Total Harmonic Distortion + Noise (THD+N):

  • Output (Front-out): 0.00056 % (−105 dB) at 1 kHz

  • Input (Line-in): 0.0004 % (−108 dB) at 1 kHz

• Frequency Response: < 10 Hz to 48 kHz (−3 dB, 24-bit/96 kHz input)

• Full-Scale Output/Input Voltage: 2 Vrms (5.65 Vp-p)

Supported Sample Rates & Bit Depth

• Playback & Recording:

  • 44.1 kHz / 48 kHz / 96 kHz / 192 kHz

  • 16-bit and 24-bit resolution

Input / Output (I/O)

Analog I/O

• 7.1-Channel Output Jacks: Standard 3.5 mm mini jacks for:

  • Front L/R

  • Side L/R

  • Center/Subwoofer

  • Rear L/R

• Line-In / Mic-In: Shared 3.5 mm mini jack

• Auxiliary Line-Level Input: 4-pin header for CD-IN/TV tuner, supports up to 192 kHz/24-bit with low latency

Digital

• S/PDIF Optical Output: TOS-Link high-bandwidth optical transmitter shared with Line-In/Mic-In jack — supports up to 192 kHz/24-bit digital output

Dolby & Surround Technologies

• Dolby Digital Live: Real-time encoding of PC audio to Dolby Digital (AC-3) for external decoders/home theater units via S/PDIF

• Dolby Virtual Speaker (virtual surround)

• Dolby Headphone: Virtual surround via stereo headphones

• Dolby Pro Logic IIx: 7.1 up-mixing from stereo/5.1 sources

Gaming & Software Features

• GX2.5 Audio Engine: EAX/Gaming 3D audio enhancement & environmental effects

• VocalFX Voice Processing: Includes VoiceEX for in-game voice spatialization and ChatEX for chat effects (Magic Voice pitch modulation)

Physical / Mechanical

• Low-Profile & Standard Brackets: Included for use in desktop and HTPC cases

• Typical Dimensions: Approximately ~167 mm × ~69 mm (L × H)

System / Software Requirements

• PCI Express x1 (or higher) slot on motherboard

• Available 4-pin PSU power connector (some variants require additional power)

• Windows drivers (official legacy support for XP/Vista/7; later OS may require community drivers or legacy compatibility)

Standards & API Compatibility

• DirectSound3D, EAX up to 5.0, OpenAL, ASIO 2.0 (driver/dedicated support varies)

• DTS Connect and other surround virtualization standards supported via bundled Dolby tech

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