A__line – WAN-Capable Audio-over-IP Interfaces

ACCESS AUDIO ANYWHERE

The notion of networked audio has become a given in the broadcast world. Only a networked infrastructure enables operators to cope with today’s sophisticated live productions. Building audio networking on the real-time IP media transport standard SMTPE 2110 is about to redefine the very essence of today’s and tomorrow’s networked broadcast systems.

Whether in a given studio, in a machine room rack somewhere on the campus or next to the field of play in a sports arena thousands of miles away, accessing and sharing audio are becoming seamless.
Meet Lawo’s A__line stageboxes, the audio nodes designed for a new era of broadcast audio networking.

MANY PORTS. MORE OPTIONS.

Delivering pristine high definition sound is a Lawo mission and deep in A__line’s DNA. A__line features a discrete Class-A microphone preamplifier design. Its superb dynamic range of 119dB(A), ultra low noise at all gain levels and a perfectly flat frequency response ensure that the original character and dynamic range of voices, musical instruments and atmospheric sounds are preserved even after the conversion to IP.
Analog line-level inputs and outputs are provided for versatility. Analog levels as high as +24dBu before clipping are accommodated. The floating design of the analog input and output stage make A__line the perfect converter for both balanced and unbalanced audio signals. Transparent AES3 audio interfacing for any digital audio signal from 44.1kHz to 96kHz is what A__line delivers to perfection. Insertable, precise sample rate conversion for each AES 3 input can be a life saver when clock domains need to be bridged.
A__line serves MADI via SFP connectors, allowing operators to use their preferred or most convenient cabling method. MADI can be switched between standard mode and a fl avor that embeds control data for Lawo’s high-density modular DALLIS audio stagebox.

BORN TO CONNECT

A__line uses the open standards SMPTE 2110-30/31 and AES67 to transport uncompressed audio in real-time on layer 3 IP networks. IP Audio streaming is managed through an Ember+ control API or via RAVENNA standards-based advertising and discovery.
The combined support of audio-over-IP streaming formats from 1 to 64 audio channels and an internal audio routing matrix provide maximum flexibility when assembling a streaming setup between different IP nodes. Being able to utilize up to 160ms of jitter buffer per received audio channel A__line units connect over LAN and WAN links to other nodes. A__line has several ways of staying in sync. The native 2110/AES67synchronization method PTPv2 allows units to be synced over the IP network. By default, each unit converts PTP sync back to Wordclock and transmits it to external gear via a dedicated output. An additional Wordclock input on each unit provides easy connectivity to an existing baseband audio reference. A__line devices synced to Wordclock generate a corresponding PTP reference to sync other IP nodes to the same reference.

24/7 UPTIME

A__line is built for mission-critical IP audio conversion. A careful selection of enhanced protection features ensures that all audio signals remain safe under tense conditions. Two redundant network interfaces secure audio-over-IP streaming via SMPTE 2022-7 seamless protection switching using two discrete network paths. With ample receive buffer capacity to meet 2022-7 class C, redundant path differentials of up to 150ms are supported. MADI comes in redundant pairs with an auto failover logic for rock-solid connectivity. In addition, A__line features a redundant power strategy. The fanless A__mic8 and A__digital8 can be powered over Ethernet (PoE) and are equipped with an additional DC inlet. The A_madi4, for its part, handles power redundancy via two AC inlets.

EAGER TO JOIN IN  - VSM

The A__line stageboxes and Lawo’s VSM are a dream team! VSM’s IP orchestration layer “vsmSOUL” interfaces with the A__line devices to manage their SMPTE 2022-7 redundancy-protected audio-over-IP connections. A__line’s I/O parameters, the internal routing matrix and GPIO interface are accessed and controlled by VSM. Plus, the VSM engine adds control dispatching and access management to the A__line environment.
To top it off, the vast control library for broadcast equipment inside VSM allows A__line devices to be seamlessly integrated into the overall workflow in a broadcast facility or OB truck.

EAGER TO JOIN IN  - mc²

A__line adds a slick solution for distributed lowdensity audio I/O breakout to the mc² audio console environment. End-to-end seamless protection switching conforming to 2022-7 provides Lawo’s pro-grade resilience right through to the IP-attached A__line nodes.
The A__line AoIP streaming setup can be conveniently managed from an mc² console. The A__line I/O parameters are forwarded to the console’s channel strips and integrated into the mc²’s snapshot system. Plus, A__line devices can be dynamically shared among multiple mc² consoles. While an mc² is able to natively handle redundant WAN links conforming to SMPTE 2022-7, the A__madi4 enhances an mc² console’s capabilities for rough WAN conditions, In addition, it is able to transform Lawo’s Dallis modular I/O system into a fully-fledged IP stagebox.

SEAMLESS REMOTE PRODUCTION

Lawo’s A__line has been designed to be installed wherever an audio signal needs to be ingested or output. With a built-in 160ms RX buffer per audiochannel and 2022-7 class C redundancy protection, a WAN gateway is natively built into each A__line unit. This ensures seamless access to the audio streams — whether next door or from another continent.

A__mic8 – Analog-to-IP Interface

Product Features

Interfaces

  • 8x switchable MIC/LINE inputs on XLR featuring remotely controlled 79dB gain range, 20dB PAD and +48V phantom power. Support for balanced and unbalanced sources through floating analog stage design. Dynamic Range of 119dB(A) with maximum input level of +24dBu
  • 4x Line outputs on XLR. Floating balanced design supports balanced and unbalanced destinations. Maximum output level: +24dBu
  • 2x RJ45 100/1000Base-T Ethernet ports for streaming and control
  • 1x Wordclock IN on BNC (75Ω)
  • 1x Wordclock Out on BNC (75Ω)
  • 8/8 GPIO opto/CMOS on SUB-D37

IP Streaming

  • Supported protocols: SMTPE 2110-30/31, AES67, RAVENNA
  • Stream Redundancy: SMPTE 2022-7 class C (copes with up 150ms redundant path differential)
  • 64 audio RX channels with 64x RX stream receivers. Each RX audio channel supports up to 160ms of jitter buffer
  • 64 TX audio channels in up to 64 TX streams. Streaming formats from 1 through 64 channels supported

 

 

Sync

  • Sample rates: 44.1, 48, 88.2, 96kHz
  • IEEE1588 PTPv2 master or slave operation
  • Wordclock master or slave operation
  • PTP <-> Wordclock conversion

Signal Processing

64/64 channel routing matrix

 

 

Control & Management

  • Basic settings via device display and encoder
  • HTTP configuration web UI
  • Ember+ control IP interface
  • Syslog Monitoring

Dual Redundant Power

  • Power-over-Ethernet (PoE) Class 3: 36~57V
  • DC Input: 10~14V/1.0A
  • Power Consumption 15W

Environmental

  • OPERATING TEMPERATURE: 0°C~+40°C (+32°F~+104°F)
  • VENTILATION: Fanless passive cooling direction sideways

Mechanics

  • DIMENSIONS (H x W x D): 44mm (1 RU) x 481mm (19”) x 210mm
    (8.27”)
  • WEIGHT: 2.1kg (4.6lbs)

 

 

A__digital8 – AES3-to-IP Interface

Product Features

Interfaces

  • 8x AES3 inputs (stereo) on XLR with SRC (input sample rates:28.4~100kHz)
  • 4x AES3 outputs (stereo) on XLR
  • 2x RJ45 100/1000Base-T Ethernet ports for streaming and control
  • 1x Wordclock IN on BNC (75Ω)
  • 1x Wordclock Out on BNC (75Ω)
  • 8/8 GPIO opto/CMOS on SUB-D37

 

 

IP Streaming

  • Supported protocols: SMTPE 2110-30/31, AES67, RAVENNA
  • Stream Redundancy: SMPTE 2022-7 class C (copes with up 150ms redundant path differential)
  • 64 audio RX channels with 64x RX stream receivers. Each RX audio channel supports up to 160ms of jitter buffer
  • 64 TX audio channels in up to 64 TX streams. Streaming formats from 1 through 64 channels supported

 

 

 

Sync

  • Sample rates: 44.1, 48, 88.2, 96kHz
  • IEEE1588 PTPv2 master or slave
  • Wordclock master or slave
  • PTP <-> Wordclock conversion

 

 

Signal Processing

64/64 channel routing matrix

 

 

Control & Management

  • Basic settings via device display and encoder
  • HTTP configuration web UI
  • Ember+ control IP interface
  • Syslog Monitoring

 

 

Dual Redundant Power

  • Power-over-Ethernet (PoE) Class 3: 36~57V
  • DC Input: 10~14V/1.0A
  • Power Consumption 15W

 

 

Environmental

  • OPERATING TEMPERATURE: 0°C~+40°C (+32°F~+104°F)
  • VENTILATION: Fanless passive cooling direction sideways

Mechanics

  • DIMENSIONS (H x W x D): 44mm (1 RU) x 481mm (19”) x 210mm
    (8.27”)
  • WEIGHT: 1.9kg (4.18lbs)

 

 

 

A__madi4 – MADI-to-IP Interface

Product Features

Interfaces

Two independant MADI bridges, each features:

  • 2x MADI ports on SFP
  • 2x Dual Media RJ45/SFP 100/1000Base-T Ethernet ports for streaming and control
  • 1x Wordclock IN on BNC (75Ω; bridge 1 only)
  • 1x Wordclock Out on BNC (75Ω; bridge 1 only)

 

 

 

IP Streaming per Bridge

  • Supported protocols: SMTPE 2110-30/31, AES67, RAVENNA,RAVENNA-LINK
  • Stream Redundancy: SMPTE 2022-7 class C (copes with up 150ms redundant path differential)
  • 64 audio RX channels with 64x RX stream receivers. Each RX audio channel supports up to 160ms of jitter buffer
  • 64 TX audio channels in up to 64 TX streams. Streaming formats from 1 through 64 channels supported

 

 

 

Sync

  • Sample rates: 44.1, 48, 88.2, 96kHz
  • IEEE1588 PTPv2 master or slave
  • Wordclock master or slave
  • PTP <-> Wordclock conversion

 

 

Signal Processing

  • Per bridge: 64/64 channel routing matrix
  • Automatic MADI failover
  • IP conversion of MADI-embedded DALLIS control protocol

 

 

Control & Management

  • HTTP configuration web UI
  • Ember+ control IP interface
  • Syslog Monitoring

 

 

Dual Redundant Power

  • Power-over-Ethernet (PoE) Class 3: 36~57V
  • DC Input: 10~14V/1.0A
  • Power Consumption 30W

 

 

Environmental

  • OPERATING TEMPERATURE: 0°C~+40°C (+32°F~+104°F)
  • VENTILATION: Cooling by temperature-controlled fan. Forced airflow sideways

 

 

Mechanics

  • DIMENSIONS (H x W x D): 44 mm (1 RU) x 448 mm (19”) x 266 mm (10.4”)
  • WEIGHT: 3.1kg (6.83lbs)

 

 

 

 

Subject to change without prior notice, no responsibility is taken for the correctness of the details provided.

A__LINE IN THE FIELD

Access Audio Anywhere: Lawo premieres WAN-capable Audio-over-IP Interfaces

Lawo will unveil the new WAN Edition of their proven A__line family of networked Audio-to-IP interfaces at IBC 2018 read more

CCTV Takes Lawo Route to IP-Based EFP

Making its first move into mobile IP-based audio for electronic field production (EFP), Chinese state broadcaster CCTV has commissioned a setup based around mc² mixing consoles from Lawo and RAVENNA real-time audio transport. read more

Hungarian Broadcaster Antenna uses Lawo equipment for FINA World Championships live broadcast production

With its fleet of 13 vehicles, media services and Pay-TV and production service provider Antenna Hungária is the leading OB company in Hungary. read more

Proximus, SiA, Lawo, NEP Belgium and Videohouse announce the successful launch of IP Remote Production technology for live broadcast of Proximus Football League in Belgium.

SiA, the production company of the Proximus group, selected Lawo’s solution to deliver its IP Remote Production infrastructure. read more

World Premiere: DutchView Infostrada’s Cloud Production Platform went live with Lawo IP Video and Audio Solutions

On Sunday 22 November, the ‘Carlo's TV Café’ television show was broadcast on leading Dutch commercial TV channel, RTL4, using DutchView Infostrada’s new Cloud Production system – the first live multi camera broadcast aired using cloud-based technology. read more

Download Lawo's Latest Products PDF