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