Key Features :

• Chipset: VT1721HT-S
• Compliant with PCI Specification, Rev. 2.2.
• PCI Plug and Play (PnP) bus interface. 24-bit PCI bus master.
• MPU-401 MIDI UART port
• ACPI and PCI PMI support
• Multi-channel AC-link supported alternatively
• 3.3V operating supply
• Full-duplex playback and recording.
• HRTF 3D positional audio, supporting both DirectSound 3D® & A3D® interfaces. Also supports earphones, 2/4/6/8 channel speakers mode.
• Built-in 32 OHM Earphone buffer.
• Downloadable Wave Table Synthesizer, supporting Direct Music®.
  7/8 channel supports under Windows XP only.
• Stereo Mixer
  1) Stereo analog mixing from CD-Audio and Line-in
  2) Stereo digital mixing from Voice, FM/Wave-table, and Digital CD-Audio
  3) Mono mixing from MIC. Software adjustable volume.
• MIDI Interface
  Fully compatible with MPU-401 Midi UART and Sound Blaster Midi mode/Standard IBM PC joystick/back stereo port (dual channels)