• Iconic rock-solid & life-long reliability — designed for mission critical applications in broadcast (24/7/365), audio production, utility, public safety and transportation markets.
• Pristine Digigram sound quality — SNR >115 dBA A-weighted on outputs, THD+N <-101 dB on outputs, with 24-bit / 192 kHz A/D and D/A converters.
• 2 mono analog channels + 1 stereo AES3 channel — total of 4 mono I/Os. One stereo AES3 input and output with hardware sample rate converter.
• Zero latency FPGA-based mixer — routes and mixes audio channels from physical and software input devices to physical and software output devices.
• Headphones jack — 1 stereo headphone output (20 mW for 600 Ω) via 3.5mm TRS female jack.
• Multi-applications — one driver package with multi-application and multi-card API available. Up to 8 ALP-X cards manageable from one unified control panel.
• Inter-board synchronization — possibility to connect up to 8 ALP-X cards linked with an inter-board sync cable.
• Connector for breakout cable or custom integration — low profile card with 2 brackets included.

Parameter	Value
Form factor	Low profile — standard and low profile brackets included
Expansion bus	PCI Express x1 (x2, x4, x8, x16 compatible)
Dimensions	L: 168 mm × H: 69 mm × l: 20 mm
Analog inputs	2 balanced line level
Analog outputs	2 servo-balanced line outputs
A/D & D/A converters	24 bits / 192 kHz
Max input level / impedance	+24 dBu / >10 kΩ
Max output level / impedance	+24 dBu / <100 Ω
Analog gain (inputs)	-88 dB to +39 dB in 0.5 dB steps
Digital gain (inputs)	-90 dB to +12 dB in 0.1 dB steps
Digital gain (outputs)	-90 dB to +12 dB in 0.1 dB steps
Digital input	1 stereo AES3 input — sample rate 32 to 192 kHz
Digital output	1 stereo AES3 output — sample rate 32 to 192 kHz
Hardware SRC ratio	From 1:8 to 7.5:1
Headphone output	1 stereo — 20 mW for 600 Ω — 3.5mm TRS jack
GPIs / GPOs	2 dry contact GPIs / 2 relay GPOs (0.5 A, 48 VCC)
Sync inputs	1× AES11 + 1× Word Clock input
Word Clock output	1×
Sample format	PCM (8, 16, 24, 32 and 32 float bits), Float IEEE754

Analog audio performance	Inputs	Outputs
SNR A-weighted	>110 dBA	>115 dBA
SNR unweighted	>108 dB	>112 dB
THD+N @18dBu / 1kHz	<-96 dB	<-101 dB
Crosstalk @1 kHz / @15 kHz	-111 dB / -110 dB	-130 dB / -111 dB
Frequency response @48kHz	±0.5 dB	±0.08 dB
Channel phase @1 kHz	<0.01°	<-7.5°

• Windows (from Windows 10 and Server 2016) — ASIO, WASAPI/DirectSound
• Linux (from Linux Kernel 4.9) — ALSA, Libgpiod
• One driver package — multi-application and multi-card API available
• Digigram ALP-X Manager (Windows) — one unified control panel for the whole ALP-X range, manages up to 8 ALP-X cards. Two working modes: Light (2 I/O channels) and Full (4 I/O channels — analog and AES3)
• Digigram ALP-X ASIO Settings (Windows) — intercard synchronization, select I/Os through ASIO (others can be used through WASAPI)
• Inter-board synchronization — up to 8 ALP-X cards via inter-board sync cable

What is the Digigram ALP222e?

A versatile PCIe stereo sound card for professional PC-based audio systems running under Windows and Linux. The perfect fit for mission critical applications in broadcast (24/7/365), audio production, utility, public safety and transportation markets.

How many I/O channels does the ALP222e provide?

2 mono analog channels and 1 stereo AES3 channel — a total of 4 mono I/Os. Plus 1 stereo headphone output.

Does the ALP222e have a headphone output?

Yes. 1 stereo headphone output (20 mW for 600 Ω) via a 3.5mm TRS female jack.

What are the two working modes in ALP-X Manager?

Light mode sets the card as 2 I/O channels (like stereo VX/PCX cards). Full mode sets the card as 4 I/O channels using both analog and AES3.

What PCIe slot does the ALP222e require?

It uses a PCIe x1 lane and is compatible with x2, x4, x8 and x16 slots. Low profile form factor with standard and low profile brackets included.

Can I use multiple ALP222e cards in one system?

Yes. Up to 8 ALP-X cards can be connected via an inter-board sync cable and managed from Digigram's unified ALP-X Manager control panel on Windows.

What cables and connectors are included?

One 1m breakout cable with XLRs for audio I/Os and AES11 input, BNC for Word Clock I/O, DB9 for GPIO, and a 3.5mm TRS female jack for headphones.