• Up to 64 playback and 64 recording channels — 64×64 at 44.1/48 kHz, 32×32 at 88.2/96 kHz, 16×16 at 176.4/192 kHz. Max 64 input and 64 output streams.
• Reliable AES67 node — trustworthy protocol, regardless of PC performances.
• Interoperability guaranteed — compliant with AES67, Ravenna, SMPTE ST 2110-30 (Level A, AX, B, BX, C, CX) and SMPTE ST 2022-7 (Class A, B, C, D).
• Flexible PTP clocking — PTP slave, PTP master and PTP Grand Master modes.
• Switching and redundant ports — 2 or 4 Gbps Ethernet ports for redundancy mode (ST 2022-7) or switching mode.
• Seamless integration — NMOS IS=04 & IS=05, in-band or out-of-band management via WEB GUI, NMOS and Aneman & MTDiscovery.
• One size fits all — low profile PCI Express x1 fanless design. Low profile bracket, full-height bracket and additional 2 Ethernet ports expansion card included as standard.
• Drivers for Windows & Linux — one driver package with multi-application and multi-card API available to access the parameters.

Parameter	Value
Form factor	Low profile PCI Express x1 — fanless design
Included in package	Low profile bracket + full-height bracket + additional 2 Eth ports expansion card
Bus	PCI Express x1 (x2, x4, x8, x16 compatible)

Format	Eth ports	Dimensions
Low Profile	2 Eth ports	L: 168 mm × H: 69 mm × l: 20 mm
Low Profile	4 Eth ports	L: 168 mm × H: 69 mm × l: 40 mm
Full-height Profile	4 Eth ports	L: 168 mm × H: 99 mm × l: 20 mm

Channels (ALP-AES67-64)	Value
@ 44.1 kHz / 48 kHz	64 × 64
@ 88.2 kHz / 96 kHz	32 × 32
@ 176.4 kHz / 192 kHz	16 × 16
Max audio streams	64 input + 64 output streams
Buffering	Up to 2000 samples per channel (41.7ms at 48 kHz)
Sample format	PCM 16, 24, 32 bits

Network & protocols	Value
Network ports (2-port config)	2× Gbps — redundancy mode (ST 2022-7) or switching mode
Network ports (4-port config)	4× Gbps — switch mode or ST 2022-7 mode
AoIP compliance	AES67, Ravenna, SMPTE ST 2110-30, SMPTE ST 2022-7
PTP clocking	PTP slave, PTP master, PTP Grand Master
Management	WEB GUI, NMOS IS=04 & IS=05, Aneman & MTDiscovery
In-band / out-of-band	Both supported

• Windows (as of Windows 10 20H2, Server 2019) — ASIO, WASAPI/DirectSound
• Linux — Ubuntu as of ver. 20 · Debian as of ver. 10 · RHEL as of ver. 9 — ALSA
• One driver package — multi-application and multi-card API available to access the parameters
• 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, firmware update
• Digigram ALP-X ASIO Settings (Windows) — up to 8 ALP-X cards intercard synchronization, select I/Os through ASIO (others can be used through WASAPI)

What is the Digigram ALP-AES67-64?

A low-profile, fanless PCIe audio interface with 64 in / 64 out channels, offering ultra-robust AES67 connectivity. Compatible with Windows and Linux, built on the proven ALP-X architecture. Ideal for radio and TV broadcasting studios, installations, live event workflows and cinemas.

What is the difference between the ALP-AES67-64 and the ALP-AES67-128?

The ALP-AES67-64 offers 64 in / 64 out channels at 44.1/48 kHz, while the ALP-AES67-128 offers 128 in / 128 out channels at the same sample rate.

What formats and brackets are included in the package?

Low profile bracket, full-height bracket and an additional 2 Ethernet ports expansion card are all included as standard in the package — giving 3 possible configurations: low profile with 2 Eth ports, low profile with 4 Eth ports, and full-height with 4 Eth ports.

What AoIP protocols does the ALP-AES67-64 support?

AES67, Ravenna, SMPTE ST 2110-30 (Level A, AX, B, BX, C, CX) and SMPTE ST 2022-7 (Class A, B, C, D).

What PTP clocking modes are supported?

PTP slave, PTP master and PTP Grand Master.

What network port configurations are available?

With 2 network ports: redundancy mode (ST 2022-7) or switching mode. With 4 network ports: switch mode, ST 2022-7 mode with 2 pairs of redundant ports, or 1 pair of redundant ports and 2 ports for out-of-band management.

Does the ALP-AES67-64 work with Linux?

Yes — with ALSA drivers on Ubuntu (as of ver. 20), Debian (as of ver. 10) and RHEL (as of ver. 9). One driver package covers both Windows and Linux with multi-application and multi-card API available.