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Marian - Seraph A2D
Analogue and Digital I/O PCIe Audio Interface

SERAPH AD2 – Audio as pure as it gets

The ultimate meeting point for analog and digital audio signals has been created. Powered by the "BEAST", an full-fledged DSP mixing desk, the SEARPH AD2 offers 1 AES/EBU I/Os and 2 balanced analog I/Os, making it everything, but one-sited ...
The ingenious circuit design with customized input and output levels and only the best components available will give you an extraordinary sonic quality at any samplerate up to 192kHz. As one of the first interfaces ever, the SERAPH AD2 features 32bit D/A converters, resulting in an preeminent quality.
Using the modern PCIe interface along with customized transfer functions, designed and optimized specifically for 32 bit high quality and high speed audio transfer, the SERAPH AD2 will be a reliable partner in any professional studio, that deals with highly sensitive analog and digital signals.




£450.00 ex VAT


The new total recall AES/EBU digital mixer & patchbay!

BEAST Digital Signal Prozessor (DSP) As the member of the SERAPH series it features the new BEAST DSP, which will make additional mixing or monitoring hardware obsolete. Even a patchbay can be spared....

First of all, it includes a 64-2 channel mixer with one stereo aux and 3 more mono aux sums. These Aux sums are all pre/post assignable and can thus be used for headphone mixes or as effect sends. Furthermore every of the 64 channels provides an advanced filter section with

  • One low shelf EQ
  • Two peak EQs
  • One high shelf EQ

Flexible and Expandable: The TDM SyncBus

Using the TDM SyncBus the SERAPH AD2 is a flexible basis for the realization of multichannel setups. Combinations with up to 3 more Seraphs or with any other SyncBus-compatible MARIAN sound system, allow setups with a number of channels according to your individual application or budget.
The SyncBus enables all connected systems to share audio clock and start/stop information. This unique feature ensures reliable recording of all the signals of the sound systems involved. More than that: Thanks to an intelligent bus management, TDM SyncBus compatible systems allow the transfer and exchange of up to 8 channels. The signals shared will appear in each mixer of each card. Even without another system the TDM SyncBus is a very useful tool, it allows putting EQs on a mixing sum or re-recording software application signals.
Fast and Reliable: Multi-client Driver Suite

Every SERAPH audio system provides support for Windows™ 2000/XP/Vista/7, Windows™ Server 2003/2008/2010 and Apple Mac OS X. The truly multi-client and continuously improved driver includes ASIO 2, GSIF 2, WDM with kernel streaming and real, non-emulated DirectSound support, delivering extrem low latencies for all software environments. Contrary to many competitive products, it allows to run several audio applications using the same or even different audio interfaces, parallel on the same computer system. Well-structured settings, dialogues and menus of the driver along with simple to read and practical documentation in printed form, make it easy to setup this system and adjust it to the specific requirements of your studio. Of course all settings, including MIDI assignments and signal flow of mixer and routing can be saved in a file for total recall.

Powerfull and Future-proof: A perfect choice

The SERAPH AD2 is available in two versions. For basic integration the SERAPH AD2 with its Wordclock input connector will serve perfectly in all recording situations. The SERAPH AD2 MWX provides an additional daughter board featuring 2 MIDI in- and outputs as well as a wordclock synchronization output.

The MWX will be automatically recognized upon connection with the main card and does not require additional software installation. The advantages of it are obvious: you can e.g. use the 2 MIDI inputs right away for controlling the BEAST with your preferred MIDI controller.

The wordclock ports are ideal for advanced clock setups that allow independence of the clock signals coming in on the AES/EBU inputs. That means, you can also synchronize all external equipment featuring a wordclock input simply using the SERAPH AD2 MWX as clock master. Additionally the high quality samplerate converters on the audio inputs allow a unsurpassed flexibility in the clock setup of the digital studio. But of course the SRCs can of course be deactivated to retain a signal path, that is beyond any doubt – pure -.

A helpful tool to manage clock signals is the included software clock status panel, monitoring samplerates, lock status, samplerate converter status and possibly clock errors of all digital input signals.

Like every sound system by MARIAN the SERAPH AD2 marks up due to its easy installation and steadily controlled highest manufacturing quality. This and the fact, that the SERAPH AD2 is 100% engineered and assembled in Germany, make us confident enough to grant a full 5-year warranty.


2 Analog I/O
24 Bit AD, 32 Bit DA converter
Customized I/O Level up to +24 dBu
switchable Input SRC with 140 dB dynamic range
“BEAST“ DSP powered
24 Bit / 192 kHz sample resolution
Wordclock / Superclock Input
Multi-Card Support
TDM SyncBus

Technical Data

PCIe Audio Interface
1 Lane (PCIe 1x) entspr. PCI Express Base Specification 1.1
PCIe Busmaster DMA mit Direct ASIO Support
4 XLR for Analog I/O at D-Sub Adapter Cable
- 25°C … +70°C
+3,3V / 0,65A+12V /0,03A

Analog Outputs

Max. Level: customizable from +15dbu up to +24 dBu
Impedance: 75 Ohm
SNR: 123 dB(A)
THD+N: < 0,0008 %
Frequency Response: 0 Hz … 61 kHz
Crosstalk: < -110 dB

Analog Inputs

Max. Level: customizable from +15dbu up to +24 dBu
Impedance: 5 kOhm
SNR: 123 dB(A)
THD+N: < 0,00045 % = < -107 dB
Frequency Response: 5 Hz … 83,4 kHz
Crosstalk: < -110 dB



at D-Sub Adapter cable


Sample Rate Ratio: 1:16 / 16 :1
Dynamic Range: 144 dB(A)
THD+N: -140db

BNC Clock Input

Frequency Range: 0 … 30 MHz
Impedance: 5 kOhm; software controlled termination to 75 Ohm
Sensitivity: 1,5 Vss - 5,0 Vss
Features: DC-Offset free; Schmitt-triggered; Overvoltage Protection


6 kHz ... 192 kHz (Analog)
22 kHz ... 192 kHz (AES/EBU)


24 Bit physisch
32 Bit physical (DA)
8...32 Bit variable towards Audio Application

Synchronisation Sources

1 Interne Clock
1 Wordclock/Superclock Input
1 AES/EBU Input
1 TDM SyncBus Clock

"Beast" DSP

64 Channel Mixer, Latency-Free
52 Bit Mixing Engine
32 Bit Single Channel Precision
256 IIR-filter; full-parametric (Gain, F, Q), 4 per channel
7 Mix Sums
Flexible Input Routing: any Signal to any Mixer Input
Flexible Recording Routing: any Mixer Channel to any Recording Channel in DAW
Flexible Output Routing: any Signal + any Sum to any Output
Remote controllable via MIDI with 2-Click Control Assignmen


Windows™ 2000/XP/2003 Server/Vista/2008 Server 32-bit
Windows™ 7, 8 and 10 32-bit and 64-bit
Mac OSX 10.7x
WDM Audio,
ASIO 2.1,
Advanced Multi-Client Support

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