Linea Research 44M20

• Four channels of sonically pure Class D amplification
• Unique, precise, 96kHz digital signal processing
• Over-designed switch mode power supply
• 85V to 240V Auto-sensing PSU
• 6,000 to 20,000 watts RMS total output
• Full front panel user interface
• Ethernet network for system operation and monitoring
• Analogue, AES3 and optional Dante™ / AES67 digital network audio
• Powerful grouping & multi-layer EQ
• Accepts 48kHz and 96kHz FIR files via System Engineer (certain models)
• Fully designed and engineered in house by Linea Research
• Manufactured in the UK

Specifications

• 2 Ohms: 5000W
• 4 Ohms: 3000W   
• 8 Ohms: 1500W
• 70/100V: 3500/5000W

General

• Number of channels: Four
• Total power output, all channels driven: 20,000, 10,000, and 6,000 Watts RMS
• Audio inputs: 4x Analogue, 2x AES3 and 4x Dante™ / AES67 (factory fitted option)
• Digital Signal Processing: High performance DSP processing on all inputs and outputs
• Control, monitoring and system status alarms
  • Ethernet network
  • Volt-free relay and contact closure port
     
• Power-save modes:
  • Standby after user defined time, instant wake up on audio
  • Deep ECO sleep after user defined time, wake up on command
     
• System sleep and wakeup: Front panel switch, network command, and audio detection

Audio Performance

• Amplifier topology: Linea Research high performance Class D
• Amplifier modulation scheme: Low feedback, multiple loop, with feed-forward error correction
• Dynamic range Measured relative to the amplifier output
  • Analogue input, better than 113dBA typical
  • AES / Dante™ input, better than 114dBA typical
     
• Gain (with all DSP level controls set to 0dB)    32dB
• Frequency response, 4 Ohm load    <7Hz to >30kHz, 4 Ohms, -2.5dB points
• Total harmonic distortion, THD    <0.05% typical, 1kHz signal, AES17 filter, 4 Ohm load
• Inter-channel crosstalk, worst case combination    better than -85dBr at 1kHz and -75dBr at 10kHz
• Maximum analogue input level    +20dBu
• Analogue input sensitivity range for full output    0dBu to +20dBu, continuously adjustable
• Analogue input and link    Input 20k Ohm, electronically balanced, link directly connected to input
• Analogue ground scheme    AES48 standard compliant
• AES3 input    Transformer isolated with unique active cable equalisation for extended range
• AES3 link    Active AES3 signal regeneration. Automatic direct bypass to the AES3 input ensuring the audio signal will still flow even when the amplifier is powered down
• AES3 supported sampling rates    24kHz to 192kHz (auto locking)

Physical

• Cooling: Dual vari-speed fans, front to back airflow. Washable, toolless change filter media.
• Analogue IN and LINK: 4x female and 4x male Neutrik™ XLR
• AES3 dual channel IN and LINK: 1x female and 1x male Neutrik™ XLR
• Amplifiers output: 4x Neutrik Speakon™ NL4 connectors
• Mains input connector: Neutrik 32A Powercon™
• Dante Primary and Secondary: 2x Shielded RJ45
• Relay output & contact closure inputs: Phoenix™ pluggable terminal block (supplied)
• Front panel display (backlit): Graphical, high contrast, daylight visible
• Front panel encoders: Two, indented, velocity sensitive
• Front panel push buttons: Large, tactile, illuminated
• LED indicators: Bright, easily differentiated
• Enclosure: Standard 19” 2U (88mm), 357mm (14”) deep  with handles and optional rear support
• Net Weight: 12.5kg (27.5 pounds).