THE LATEST GENERATION
MULTI-CHANNEL LOW PROFILE
PCIe SOUND CARD

ALP442e

Universally acclaimed, unchanged Digigram features are still up to meet your challenges. Your favorite trusted PCX and VX cards essentials still fuel the new Digigram ALP-X range. 

Same quality, same high standards. A new technology core for this new cards range will push back the limits, offer enhanced performances, and simplify users’ daily routines with ALP-X sound cards.

ALP442e is a versatile multichannel PCIe sound card for professional PC-based audio systems running under Windows and Linux environments. With its reliability, stability, and compact low-profile design, ALP442e is ideally suited for mission-critical applications in the broadcast, industrial, and military markets. This card is ready for any challenge. It offers four balanced analog line inputs plus two stereo AES3 inputs, four balanced analog outputs plus two AES3 outputs, and 8 GPIs / 8 GPOs.

The onboard zero latency mixer features 16 I/O channels (4 analogs, 4 AES3, 8 software play/record). Each of the 16 output channels has its own mix from the 16 inputs.

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

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

Rock-solid, life-long, hiccup free reliability
Fits in any type of PC / workstation / server with a PCIe slot
Drivers evolve with Windows and Linux updates

Specifications

Format

Dimensions
L: 168 mm x H: 69 mm x l: 20 mm L: 6.6 inch; H: 2.7 inch; l: 0.8 inch 

Form Factor
Low profile
(standard and low profile brackets included)

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

Drivers

Supported OS
Windows: as of Windows 10 and Server 2016
Linux:

  • 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 

Drivers
Windows: Asio, Wasapi/DirectSound
Linux: Alsa – The Alsa driver is currently supplied by Digigram so that you can compile it for your Linux distribution.

One Driver Package 
Multi-application and multi-card API available 

Control panel

Digigram ALP-X ASIO Settings (On Windows)
• Asio Control Panel: up to 8 ALP-X cards
(intercard synchronization)
• Select I/Os used through ASIO
(others can be used through Wasapi)

Digigram ALP-X Manager (On Windows)
• A unique control panel for the whole ALP-X range
• Manages up to 8 ALP-X cards

Main functions
Zero latency FPGA-based 16×16 mixer
Adjustment of input and output levels
Mixing before monitoring and recording
Clock & sync selection
GPIO status

HARDWARE SPECIFICATIONS

INPUTS

Analog
4 Balanced line inputs
A/D Converter: 24 bits / 192 kHz
Max level / Impedance: +24 dBu / >10 kOhms
Adjustable analog gain: from -88 dB to +39 dB, in 0.5 dB steps
Adjustable digital gain: from -90 dB to +12 dB in 0.1 dB steps

Digital
1 stereo AES3 input
Adjustable digital gain: from -90 dB to +12 dB, in 0.1 dB steps
Sample rate (kHz): 32, 44.1, 48, 64, 88.2, 96, 128, 176.4, 192
Hardware Sample Rate Converter frequency ratio: from 1:8 to 7,5:1

Other
1 AES11 synchronization input
1 Word Clock synchronization input
8 dry contact GPIs

OUTPUTS

Analog
4 servo-balanced line outputs
D/A Converter: 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

Digital
2 stereo AES3 output
Adjustable output gain: from -90 dB to +12 dB, in 0.1 dB steps
Sample rate (kHz): 32, 44.1, 48, 64, 88.2, 96, 128, 176.4, 192

Other
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: <-96 dB @24 dBu (1 kHz)
Outputs: <-96 dB @24 dBu (1 kHz)

Crosstalk
Inputs
128 dB @1 kHz / -107 dB @15 kHz
Outputs
-127 dB @1 kHz / -112 dB @15 kHz

Channel phase
Inputs: < 0.01° @1 kHz
Outputs: < 0,02° @ 1kHz

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 I/Os and 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.