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.Â
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
Made for regular application or custom design with help of Digigram control API
Specifications
Format
DimensionsÂ
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 BusÂ
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 5.14Â
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 PackageÂ
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 connectorsÂ
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.
