MULTI-CHANNEL LOW PROFILE
PCIe SOUND CARD WITH
MIC/LINE INPUTS

ALP442e-MIC

Universally acclaimed, unchanged Digigram features are still up to meet your challenges. Your favourite, 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-MIC is a low-profile PCIe multichannel sound card designed for continuous 24/7/365 use environments, as part of professional audio applications based on Windows or Linux operating systems. The card offers analog and digital audio connectivity, and features an onboard 16×16-channel mixer that allows for the routing and mixing of inputs to the outputs.

The low latency drivers are multi-card (up to 8 ALP cards) and multi-client.

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

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 (16 mix buses)
• Clock & sync selection
• GPIO status

 

Hardware specifications

INPUTS
Analog
• 4 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)

Digital
• 2 stereo AES3 inputs
• 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: 1:8 to 7,5:1

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

OUTPUTS
Analog
• 4 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

Digital
• 2 stereo AES3 outputs
• 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

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 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.