• Iconic rock-solid & life-long reliability — designed for mission-critical applications in broadcast, production and high-end installations.
• Pristine Digigram audio quality — high-resolution AES3 connectivity up to 192 kHz with zero latency FPGA-based 16×16 mixer.
• 4 stereo AES3 inputs with switchable hardware sample rate converters — 4 hardware SRCs with ratio from 1:8 to 7.5:1, sample rate 32 to 192 kHz.
• 4 stereo AES3 outputs — adjustable digital gain from -90 dB to +12 dB in 0.1 dB steps, sample rate 32 to 192 kHz.
• Zero latency FPGA-based 16×16 mixer — seamless routing and mixing between all input channels (physical inputs and software playback devices) and output channels (physical outputs and software recording devices). 16 mix buses.
• External clock synchronization — AES3, AES11 and Word Clock sync inputs, all supporting 32 to 192 kHz.
• 8 GPIs and 8 GPOs — 8 dry contact GPIs and 8 relay GPOs (0.5 A, 48 VCC).
• Two brackets included as standard — low profile and full-height brackets both included in the package.
• 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.

Parameter	Value
Form factor	Low profile and full-height — both brackets included as standard
Expansion bus	PCI Express x1 (x2, x4, x8, x16 compatible)
Dimensions	L: 168 mm × H: 69 mm × l: 20 mm
Digital inputs	4 stereo AES3 inputs — sample rate 32 to 192 kHz
Digital outputs	4 stereo AES3 outputs — sample rate 32 to 192 kHz
Hardware SRC	4× switchable — ratio from 1:8 to 7.5:1
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
On-board mixer	Zero latency FPGA-based 16×16 — 16 mix buses
GPIs / GPOs	8 dry contact GPIs / 8 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

• Windows (from Windows 10 and Server 2019) — ASIO, WASAPI/DirectSound
• Linux — Ubuntu 20.04 kernel 5.15 · Debian 11 kernel 5.10 · RHEL 9 kernel 5.14 — 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
• Digigram ALP-X ASIO Settings (Windows) — intercard synchronization, select I/Os through ASIO (others can be used through WASAPI)

What is the Digigram ALP881e?

A low-profile, multichannel PCIe sound card engineered for professional PC-based audio systems on Windows and Linux. The ideal solution for mission-critical applications in broadcast, production and high-end installations requiring high-resolution AES3 connectivity.

What makes the ALP881e different from other ALP-X cards?

The ALP881e is a pure digital card — it has no analog inputs or outputs. It offers 4 stereo AES3 inputs with switchable hardware sample rate converters and 4 stereo AES3 outputs, making it ideal for all-digital professional audio installations.

What are the hardware sample rate converters on the ALP881e?

4 switchable hardware SRCs are available on the AES3 inputs, with a conversion ratio from 1:8 to 7.5:1. They allow connecting sources running at different sample rates without external conversion.

What external clock sources does the ALP881e support?

AES3, AES11 and Word Clock synchronization inputs, all supporting sampling rates from 32 kHz up to 192 kHz.

What brackets are included with the ALP881e?

Both a low profile bracket and a full-height bracket are included as standard in the package.

What PCIe slot does the ALP881e require?

It uses a PCIe x1 lane and is compatible with x2, x4, x8 and x16 slots.

Can I use multiple ALP881e cards in one system?

Yes. Up to 8 ALP-X cards can be managed from Digigram's unified ALP-X Manager control panel on Windows with one driver package covering multi-application and multi-card use.

What cables and connectors are included?

One 1m breakout cable with XLR for AES3 I/Os and AES11 sync input, BNCs for Word Clock I/O, and 2× D-Sub 25 for GPIs and GPOs.