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ElectronicsInstalled SoundLive Sound


Four-Channel Class D Amplifier

Martin Audio VIA2004 Four-Channel Class D Amplifier
Where to Buy or Rent

The VIA2004 is an advanced 4-channel power amplifier which delivers superb audio performance in a lightweight, cost-effective package. Delivering 4×500 watts into 4 ohms, it is ideal for powering O-Line, ADORN and CDD Series installations in bars, auditoriums and HoW, as well as small-medium scale portable sound reinforcement and club use.


  • Four channels of efficient Class D amplification
  • 2000 Watts total power output
  • 2U rack height
  • Exceptionally lightweight
  • Switch mode power supply
  • Variable speed cooling fan with front-to-back airflow
  • Global mains operation, 115V to 230V auto-sensing
  • Comprehensive protection systems
  • Signal and clip limiter LEDs


  • Small to medium-scale installations
  • Portable sound and stage monitoring
  • Hotels, restaurants and bars
  • Houses of Worship and auditoriums
  • Educational facilities
  • Live music and dance clubs
  • Mobile DJ’s

Its high efficiency design reduces the energy drawn from the mains supply and ensures the power reserves needed to deliver superb sound in demanding environments with reliability and ease.

Comprehensive protection functions continuously monitor its performance to maintain safe operating conditions and full output capability in ambient temperatures up to 40°C.

For a wide variety of installations and portable applications, the VIA2004 is ideally partnered with the Martin Audio DX0.5 system processor. Larger installations will benefit from use with the DX4.0 processor with its onboard network capability and proprietary VU-NET software control. The DX4.0 and VIA2004 combination is perfect for delivering cost-effective scalable resolution under VU-NET control to an installed O-Line array.

User guide Electronics Brochure Datasheet
TYPE Four-channel Class D amplifier
  • 4 x 500W into 4 ohms
  • 4 x 250W into 8 ohms
COOLING Vari-speed fans, front-to-back airflow
Audio Inputs/Outputs
ANALOGUE IN/LINK (4 CHANNELS) 4 x female, 4 x male Neutrik™ XLR
ANALOGUE INPUT IMPEDANCE 5 kΩ typical, balanced
AMPLIFIER OUTPUTS 4 x Neutrik Speakon™ NL4
Audio Performance
FREQUENCY RESPONSE 20Hz - 20kHz +/- 0.45dB, 4 ohm load
TOTAL HARMONIC DISTORTION 0.003% typical, 1kHz @ 1W
Power Supply
TYPE 2 x high current, high frequency switch-mode
AC OPERATING RANGE 100-240V +/-10% 45 - 65Hz
MAINS CONNECTOR 1 x Neutrik Powercon™
TOTAL SYSTEM EFFICIENCY 89% (4 x 250W into 8 ohms)
  • (W) 482 x (H) 2U/88mm x (D) 441mm
  • (W) 19in x (H) 2U/3.5in x (D) 17.4in
incl handles and optional rear support
WEIGHT 8kg (17.6lbs
Martin Audio VIA2004 Tech Drawing

Technical Drawings for VIA2004.
All information is Copyright. Martin Audio Ltd.


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Copyright Martin Audio Ltd.
Subject to change without notice.
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