• Iconic rock-solid & life-long reliability — designed for critical audio and voice recording applications in audio production, equipment monitoring and recording 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 balanced Mic/Line inputs with high-end preamplifiers — switchable 48V phantom power on each input, EIN <-124 dB at Gain 65 dB.
• 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 Mic/Line level inputs
Analog outputs	2 servo-balanced line outputs
A/D & D/A converters	24 bits / 192 kHz
Line — max input level / impedance	+24 dBu / >10 kΩ
Line — analog gain	-88 dB to +39 dB in 0.5 dB steps
Line — digital gain	-90 dB to +12 dB in 0.1 dB steps
Mic — max input level / impedance	+10 dBu / >10 kΩ
Mic — analog gain	0 dB to +65 dB in 0.5 dB steps
Mic — max sensitivity	0 dBfs for a -55 dBu input signal
Mic — phantom power	Switchable 48V per input
Mic — EIN	<-124 dB @ Gain 65 dB (48kHz)
Max output level / impedance	+24 dBu / <100 Ω
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-MIC?

The versatile PCIe stereo sound card for professional PC-based audio systems that require microphone inputs. Guarantees unparalleled quality for audio and voice recording in audio production, equipment monitoring and recording markets.

What is the difference between the ALP222e and the ALP222e-MIC?

The ALP222e-MIC adds microphone-level inputs with high-end preamplifiers, switchable 48V phantom power per input, and a mic gain range of 0 to +65 dB with EIN <-124 dB — making it suitable for both line and microphone sources.

Does the ALP222e-MIC support phantom power?

Yes. 48V phantom power is switchable independently on each of the 2 mic/line inputs.

How many I/O channels does the ALP222e-MIC 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-MIC have a headphone output?

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

What PCIe slot does the ALP222e-MIC 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-MIC 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.