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ASI 5812

The ASI5812 is a professional PCI Express audio adapter designed for use in radio broadcast FM MPX generation. The adapter offer two stereo record streams from either a balanced analog input or AES/EBU digital input and four stereo play streams mixed to a balanced analog output and two AES/EBU digital outputs. The second AES/EBU output includes a Sample Rate Converter (SRC) and independent sample rate clock.

The adapter also includes GPIO in the form of four opto-isolated inputs and two relay isolated outputs.




  • Four stereo streams of PCM playback

  • Two stereo streams of PCM record

  • Balanced stereo analog input and output

  • PCIe interface

  • GPIO: Four opto inputs and two relay outputs

  • AES/EBU or S/PDIF digital input and output (software selectable)

  • 24bit analog-to-digital and digital-to-analog converters - 100dB SNR and 0.0025% THD+N

  • 11 to 192kHz sample rates

  • MRX™ multi rate mixing technology supports digital mixing of multiple sample rates

  • SoundGuard™ transient voltage suppression protects against lightning and other high voltage surges on all I/O

  • Up to 8 cards in one system

  • Half-height design and included mounting bracket allow for installation in small form factor systems

  • Windows and Linux software drivers available

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