MULTICHANNEL PCIe SOUND CARD

WITH MIC/LINE INPUTS

ALP280e-MIC

Building on the success of the ALP-X range, the new ALP280e-MIC card is purpose-built to address the evolving needs of audio acquisition and processing in critical audio industries such as broadcast, court rooms, public safety, acoustic measurement, process monitoring, and 24/7 operation installations where reliability and audio quality are paramount.

The ALP280e-MIC is a low profile PCIe sound card optimized for the recording of 8 analog mic/line-level audio inputs with zero latency monitoring and onboard mixing capabilities. By integrating GPIOs, multi-OS compatibility, and powerful FPGA mixers, Digigram ensures that system integrators can meet their technical goals without compromise.

DOWNLOADS

BENEFITS

SPECIFICATIONS

For Windows
and Linux

Iconic Rock-solid
& life-long

Pristine Digigram
sound quality

Multi-applications

Hiccup free reliability

Benefits

Outstanding audio quality and performance

Onboard high quality mic preamps

Rock-solid, life-long, hiccup free reliability
Fits in any type of PC / workstation / server with a PCIe slot

Made for regular application or custom design with help of Digigram control API

Specifications

Format
Dimensions
Low profile
L: 168 mm x H: 69 mm x l: 20 mm
L: 6.6 inch; H: 2.7 inch; l: 0.8 inch
Standard profile
L: 168 mm x H: 99 mm x l: 20 mm
L: 6.6 inch; H: 3.9 inch; l: 0.8 inch

Form Factor
Low profile PCIe (Additional full-height bracket provided for installation in standard height slots)

Expansion Bus
PCI Express TM (PCIe TM) x1 (x2, x4, x8, x16 compatible)

Drivers

Supported OS
Windows: as of Windows 10 and Server 2019

Linux:

  • Ubuntu ver. 20.04 – kernel 5.15
  • Ubuntu ver.22.04 – kernel 6.5
  • Debian 11 – kernel 5.10
  • Debian 12 – kernel 6.1
  • RHEL 9 kernel 5.1
    Source code available for compiling drivers for other Linux distributions
    Optional service for generating a driver for other Linux distributions

Drivers
Windows: Asio, Wasapi/DirectSound
Linux: Alsa 
One Driver Package 
Multi-application and multi-card

API available to access the parameters

Control panel

Digigram ALP-X ASIO Settings (Windows)

  • Asio Control Panel: up to 8 ALP-X cards
  • Select I/Os used through Asio

(others can be used through Wasapi)

Digigram ALP-X Manager (Windows)

  • One unified control panel for the whole ALP-X range
  • Manages up to 8 ALP-X cards
  • Vu-meters, clock frequency

 

specifications

INPUTS
Analog
• 8 balanced Mic / line level inputs
• A/D Converters: 24 bits / 192 kHz
• Line level
– Maximum input level/impedance: +24 dBu / >10 kΩ
– Adjustable analog gain: from -24 dB to +16 dB, in 0.5 dB steps
– Adjustable digital gain: from -90 dB to +12 dB in 0.1 dB steps
• Mic level
– Maximum input level/impedance: +10 dBu / >10 kΩ
– Adjustable analog gain: from -10dB to +56 dB, in 0.5 dB steps
– Maximum sensitivity: 0 dBfs for a -56 dBu input signal
– Switchable 48 V phantom power on each input
– Equivalent Input Noise: <-124 dB @ Gain +56 dB (48kHz)

Others
• 1 AES11 synchronization input
• 1 Word Clock synchronization input
• 8 dry contact GPIs

OUTPUTS
Analog
• 2 servo-balanced line outputs
• D/A Converters: 24 bits / 192 kHz
• Max level / Impedance: +24 dBu / <100 Ohms
• Adjustable digital gain: from -90 dB to +12 dB, in 0.1 dB steps

Others
• 8 relay GPOs (0.5 A, 48 VCC)
• 1 Word Clock output

     

    Analog audio performances

    Frequency response
    @48 kHz, 20 Hz-20 kHz
    Inputs : +/- 0.83 dB
    Outputs : +/- 0.57 dB

    SNR
    Inputs
    A-Weighted: >115 dBA
    Unweighted: >112 dB
    Outputs
    A-Weighted: >109 dBA
    Unweighted: >106 dB

    THD + Noise (@22 dBu /1 kHz)
    Inputs: <-98 dB @24 dBu
    Outputs: <-96 dB @24 dBu

    Crosstalk
    Inputs: @1 kHz / @15 kHz
    128 dB / -107 dB
    Outputs: @1 kHz / @15 kHz
    -127 dB / -112 dB
    Channel phase (@1 kHz)
    Inputs: < 0.01°
    Outputs: < -0.02°

    Sample format

    PCM (8, 16, 24, 32 and 32 float bits), Float IEEE754

    CABLE & CONNECTORS SPECIFICATIONS

    Breakout cable for analog I/Os
    – Length 1 m, XLR connectors 

    Breakout cables for digital I/Os
    – Length: 1 m
    – XLR for AES11 sync input
    – BNCs for Word clock I/O
    – 2 x D-Sub 25 for GPIs and GPOs

    Inter board synchronization

    SYNCHRONIZATION SOURCES

    Internal clock (kHz)
    11.025, 16, 22.05, 24, 32, 44.1, 48, 64, 88.2, 96, 128, 176.4, 192

    AES11 (kHz)
    32, 44.1, 48, 64, 88.2, 96, 128, 176.4, 192

    Word Clock input (kHz)
    32, 44.1, 48, 64, 88.2, 96, 128, 176.4, 192

    Intercard clock* (possibility to connect up to 8 ALP-X cards linked with an inter-board sync cable)

    Q&A

    Sound cards

    Which Linux Distribution are supported by ALP sound cards ?

    ALP cards are supported under the following Linux distributions, from the mentioned versions:

    • Ubuntu:
         ver. 20.04 - kernel 5.15
         ver. 22.04 - kernel 6.5
    • Debian 11 - kernel 5.10
    • Debian 12 - kernel 6.1
    • RHEL 9 kernel 5.14

    In case you need to run the driver under another Linux distribution, please contact Digigram to get
    the source code. If  you experience issues for compiling / running the driver on your Linux distribution, we
    propose a service to provide you with the appropriate driver; please contact Digigram.

    My sound card is not detected by Windows

    Make sure that you downloaded the lasted driver on our website. Indeed, from time to time we have to make component updates that require a new driver.