The latest generation stereo sound card designed for the most demanding professional audio applications.
ALP222e
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.
ALP222e is a low profile PCIe stereo sound card designed for operating in 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 on-board 8×8-channel mixer that allows for the routing and mixing inputs to the outputs.
The low latency drivers are multicard (up to 8 ALP cards) and multi-client.
For Windows
and Linux
Iconic Rock-solid
& life-long
Pristine Digigram
sound quality
Multi-applications
Hiccup free reliability
Benefits
Specifications
Format
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
• 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
• 2 working modes
Light: Set the card as 2 I/O channels (like stereo VX / PCX cards)
Full: Set the card as 4 I/O channels (analog and AES3)
Main functions
Zero latency FPGA-based mixer
Adjustment of input and output levels
Mixing before monitoring and recording
Clock & sync selection
GPIO status
HARDWARE SPECIFICATIONS
Analog
2 Balanced line level
A/D Converter: 24 bits / 192 kHz
Max level / Impedance: +24 dBu / >10 kOhms
Adjustable analog gain: from 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
2 dry contact GPIs
OUTPUTS
Analog
2 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
1 stereo headphone output (20 mW for 600 Ω)
Digital
1 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
2 relay GPOs (0.5 A, 48 VCC)
1 Word Clock output
ANALOG AUDIO PERFORMANCES
@48 kHz: 20 Hz – 20 kHz
Inputs : +/- 0.5 dB
Outputs : +/- 0.08 dB
SNR
Inputs
A-Weighted: >110 dBA
Unweighted: >108 dB
Outputs
A-Weighted: >115 dBA
Unweighted: >112 dB
THD + Noise
Inputs: <-96 dB @18 dBu (1 kHz)
Outputs: <-101 dB @18 dBu (1 kHz)
Crosstalk
Inputs
-111 dB @1 kHz / -110 dB @15 kHz
Outputs
-130 dB @1 kHz / -111 dB @15 kHz
Channel phase
Inputs: < 0.01° @1 kHz
Outputs: < -7.5° @ 1kHz
SAMPLE FORMAT
CABLE & CONNECTORS SPECIFICATIONS
Total breakout cable length: 1 m
XLRs for audio I/Os and AES11 input
BNC for Word Clock I/O
DB9 for GPIO
Inter board synchronization
Headphones: 3.5 mm TRS female jack
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.
