A__line

High-Quality Analog-to-IP Interfaces

Lawo takes IP-networked audio to the field
Networked - flexible - reliable: The Lawo A__line series of high-quality Audio-to-IP interfaces. A__line products are designed to provide easy and reliable solutions for intuitively transporting analog and digital audio signals via IP network environments. Based on RAVENNA technology, all A__line devices are also compatible with the AES67 audio-over-IP interoperability standard and come standard with VisCon__navigator, an intuitive software for easy set-up of audio and video streams in IP networks without the necessity for deep IT knowledge.

Key Features

  • Lawo-grade audio quality: high dynamic range (118dBA), ultra low distortions (THD&N 0.0003% for inputs) and ultra low equivalent input noise (EIN -128dBu@150Ω)
  •  Click-free gain changes
  •  44.1 / 48 / 88.2* / 96*kHz operation
  •  High RF immunity
  •  One cable only for A__mic8: PoE (Powered-over-Ethernet)
  • Optional local PSU redundancy
  • Fan-free hardware design
  •  RAVENNA / AES67 compatible
  •  Full remote control capability
  • Intuitive VisCon__navigator network control software
  • Dimensions (H x W x D): 44 mm (1 RU) x 483 mm (19“) x 210 mm (8.27“) / Weight: 2.1 kg (4.6 lbs)

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A__mic8

High-Quality Analog-to-IP Interface

The A__mic8 combines eight Lawo-grade Mic/Line Inputs, four Line Outputs, eight GPIOs and two RAVENNA / AES67 Ethernet ports in a compact 19”/1RU device, supporting 44.1 / 48 / 88.2* / 96k*Hz sampling rates. Perfect for work in multiple applications and environments, the A__mic8 is designed to fulfill the highest demands in audio quality, providing ultra low distortion and noise with Lawo’s premium grade mic pre-amps.

Since the unit is powered over Ethernet (PoE), it can be connected with just one CAT5 cable. A second Ethernet port allows for daisy-chaining of multiple A__mic8s and redundant power can be furnished via the device’s DC input. CAT5 cable allows a maximum distance of 100m (330ft) to the powering switch, with an optional Coax converter cable length can be extended to 1km (0.6mi).

Highlights

  • Lawo-grade audio quality:

    • high dynamic range (118dBA)
    • ultra low distortions (THD&N 0.0003% for inputs)
    • ultra low equivalent input noise (EIN -128dBu@150Ω)

  • Click-free gain changes
  • 44.1 / 48 / 88.2* / 96*kHz operation
  • High RF immunity
  • One cable only:

    • PoE (Powered-over-Ethernet)
    • optional local PSU redundancy

  • Fan-free hardware design
  • RAVENNA / AES67 compatible
  • Full remote control capability
  • Intuitive VisCon__navigator network control software

 

Lawo-grade Microphone Pre-amps
A__mic8’s discrete Class-A microphone preamplifiers deliver excellent performance with ultra low equivalent input noise even at moderate gains and very low noise at low gains. And even at high gains the circuitry provides superb distortion performance and a flat frequency response. Lawo’s Advanced Preamplifier Gain Structure employs a fully digital gain stage and two noise-scaling amplifiers, one analog and one digital. The analog noise-scaling amplifier in combination with its digital counterpart is used to manage the analog gain stage for optimal noise performance. Lawo’s unique methodology also makes it possible to change gain settings in the digital domain without any audible clicks. In addition to the A__mic8’s superb gain performance characteristics, it also offers advanced digital filters within the A/D conversion process that utilize modified FIR filter architecture to minimize latency while maintaining excellent linear phase response.

High-End Analog Output Stage
The analog output interfaces of the A__mic8 are designed for sonic excellence, featuring ultra low distortion and tracked-current voltage sources in the output stages, guaranteeing nearly equal currents in both lines independent of the load. Due to the resulting high common mode output impedance these output stages are floating. This ensures excellent noise damping and high common mode rejection with all kinds of input stages, even unbalanced ones.

Specifications A__mic8

Audio Interfaces

  • 8x MIC/LINE IN: balanced, galvanic separated, suitable for unbalanced use; phantom power +48V; pad -20dB; gain range 118dBA; max. input level: +24dBu; frequency response -0.03dB (20Hz to 20kHz); THD&N 0.0003%; equivalent input noise EIN −128dBu@150Ω; crosstalk <-140dB @ 1kHz
  • 4x LINE OUT: balanced, floating, suitable for unbalanced use; max. output level +24dBu; frequency response ±0.1dB (20Hz to 20kHz); THD&N 0.0007%; crosstalk <-132dB @ 1kHz

GPIO Interfaces

  • GPI: 8x optocouplers (3-36 VDC / 8mA @ 36V)
  • GPO: 8x silent CMOS relays (50V AD/DC / 0.5A AC; 1.0A DC)

IP Interfaces

  • GIGABIT ETHERNET: 2x RJ45 100/1000BaseT
  • PROTOCOLS: RTP/AVT & RTCP (RFC 3550); IGMPv2 + IGMPv3; IEEE-1588-2008 (PTPv2); multicast only
  • CABLE LENGTH: RJ45 100m (330ft) / optional: Coax 1km (0.6mi)

Management and Monitoring

  • Protocols: HTTP, SNMPv1, Ember+
  • User Interfaces: Embedded HTML5 user interface; StreamDirector: JAVA™ application

 

 

Power

  • Power-over-Ethernet (PoE) Class 3: 36-57V
  • DC Input: 10-14V / 1.0A
  • Power Consumption 12W (full load)

Environmental

  • Operating Temperature: 10° C to +40° C (+50° F to +104° F)
  • Relative Humidity: < 90% non-condensing
  • Electromagnetic Environment: E2 (EN55103-1,-2)

Frame Mechanics

  • Dimensions (H x W x D):
    44 mm (1 RU) x 481 mm (19“) x 210 mm (8.27“)
  • Weight: 2.1 kg (4.6 lbs)

A__digital8 & A__madi4

The Lawo A__digital8 and A__madi4 are the latest members of Lawo’s new A__line series of high-quality Audio-to-IP interfaces for broadcast, live and install applications. In combination with the existing A__mic8 the compact 19”/1RU devices provide  easy and reliable solutions for intuitively transporting analog and digital audio signals via IP network environments, and to establish IP-based audio networks. Based on RAVENNA technology, all A__line devices are also compatible with the AES67 audio-over-IP interoperability standard, and come with VisCon__navigator (an intuitive software for easy set-up of audio and video streams in IP networks without the necessity for deep IT knowledge) as standard. The A__mic8 features eight Lawo-grade mic/line inputs and four line outputs, A__digital8 eight AES3 inputs and four AES3 outputs and A__madi4 four MADI interfaces. All units also provide two RAVENNA / AES67 Ethernet ports and eight GPIOs.

Key features

  • Lawo-grade audio quality: wide dynamic range (118dBA), ultra low distortions (THD&N 0.0003% for inputs) and ultra low equivalent input noise (EIN -128dBu@150Ω)
  • Click-free gain changes
  • 44.1 / 48 / 88.2*/ 96*kHz operation
  • High RF immunity
  • One cable only for A__mic8 and A__digital8: PoE (Powered-over-Ethernet)
  • Optional local PSU redundancy
  • Fan-free hardware design
  • RAVENNA / AES67 compatible
  • Full remote control capability
  • Intuitive VisCon__navigator network control software

Specs

  • Dimensions (H x W x D): 44 mm (1 RU) x 483 mm (19“) x 210 mm (8.3“ / A__madi 4: 244 mm / 9.6“)
  • Weight: 2.1 kg (4.6 lbs / A__madi 4: 3.1 kg / 6.1 lbs)

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