Martin Audio VIA5004 – Four-Channel High-Power Class D Amplifier

Product Overview

The Martin Audio VIA5004 is a high-power four-channel commercial Class D amplifier built for medium to large-scale fixed installations and demanding portable sound reinforcement environments. Delivering 5000 watts of total output power — 4 x 1250 watts into 2 ohms or 2 x 2500 watts bridged into 4 ohms — this rack-mount AV amplifier provides the multi-channel amplification capacity required for main PA systems, subwoofer arrays, and complex zone-driven installations. The VIA5004 is a core component in Martin Audio CDD, Blackline X, and V.Series system builds for commercial AV integrators and system designers. Explore the full range of compatible Martin Audio loudspeakers at creationnetworks.net/collections/martin-audio.

Product Description

The Martin Audio VIA5004 sits at the top of the four-channel VIA Series lineup, combining high power density with the efficiency and reliability that commercial AV installers demand in permanent and touring system builds. At 4 x 1250 watts into 2 ohms stereo, or 2 x 2500 watts bridged into 4 ohms, the VIA5004 provides the output headroom needed to drive large-format passive loudspeakers, subwoofers, and multi-way speaker systems under demanding acoustic conditions.

The amplifier supports 3-channel operating configuration, enabling direct compatibility with Martin Audio TH Series 3-way systems without requiring an additional amplification stage. This flexibility reduces equipment count and simplifies system architecture in larger fixed installations and live sound builds.

Class D amplification topology delivers high efficiency at rated power, significantly reducing mains current draw and heat dissipation compared to Class AB designs of equivalent output. A switch-mode power supply (SMPS) maintains stable output across the full global mains range of 115 V to 230 V with auto-sensing, enabling worldwide deployment on a single SKU.

The 2U rack-mount chassis features a variable-speed fan with front-to-back airflow, supporting installation in enclosed equipment bays while managing thermal load quietly during low-demand periods. Comprehensive protection systems monitor thermal, short-circuit, and DC fault conditions continuously, maintaining full output capability in ambient temperatures up to 40°C. Per-channel signal and clip limiter LEDs provide front-panel status visibility during commissioning.

For DSP system control, the VIA5004 pairs with the Martin Audio DX0.5 loudspeaker management system for mid-scale builds and the DX4.0 networked system controller for large installations managed under VU-NET software. Browse the complete Martin Audio portfolio at creationnetworks.net/collections/martin-audio.

Key Features

• Four-Channel Class D Amplification — Delivers 4 x 1250 W into 2 ohms or 2 x 2500 W bridged into 4 ohms for high-power multi-zone coverage.
• 5000 W Total Output Power — Sufficient output for medium to large commercial main PA systems, subwoofer arrays, and distributed installation zones.
• 3-Channel Operating Mode — Configurable for 3-channel operation to directly support Martin Audio TH Series 3-way speaker systems.
• 2U Rack-Mount Form Factor — High power density in a compact 2U chassis preserves rack space relative to output capability.
• Switch-Mode Power Supply — SMPS architecture delivers high efficiency and stable performance under varying mains conditions.
• Global Mains Auto-Sensing (115–230 V) — Single unit supports worldwide voltage standards for international project deployment.
• Variable-Speed Cooling Fan (Front-to-Back) — Dynamic fan speed reduces acoustic noise during idle periods; front-to-back airflow suits enclosed equipment bays.
• Comprehensive Protection Systems — Thermal, short-circuit, and DC fault protection maintains full output up to 40°C ambient.
• Signal and Clip Limiter LEDs — Per-channel front-panel indicators support commissioning and real-time system monitoring.
• Exceptionally Lightweight — Low chassis mass reduces rack loading and simplifies transport for portable applications.

Typical Applications

• House of worship main PA and subwoofer amplification
• Auditorium and all-hands room multi-channel amplification
• Large conference room and boardroom AV system power
• Multi-purpose room and training room installed audio systems
• Government and commercial meeting spaces requiring zoned coverage
• Portable live sound reinforcement and stage monitoring
• Live music venues and club sound systems

Technical Specifications

Frequently Asked Questions

How many channels does the VIA5004 provide?

The VIA5004 operates as a four-channel Class D amplifier in standard configuration. It can also be configured for 3-channel operation to directly support Martin Audio TH Series 3-way speaker systems without an additional amplifier.

What is the output power of the VIA5004?

In stereo mode the VIA5004 delivers 4 x 1250 watts into 2 ohms. In bridged mode it provides 2 x 2500 watts into 4 ohms, making it suitable for high-output commercial main PA systems, subwoofer arrays, and large installed system applications.

Does the VIA5004 include onboard DSP?

The VIA5004 does not include onboard DSP processing. Martin Audio recommends pairing with the DX0.5 loudspeaker management system or the DX4.0 networked system controller for full EQ, crossover, delay, and limiting control under VU-NET software.

Does the VIA5004 support Dante or AES/EBU digital inputs?

The VIA5004 accepts balanced analog inputs. Dante and AES/EBU digital connectivity are not native to this amplifier. A Dante-capable DSP processor upstream — such as the Martin Audio DX4.0 — would handle networked audio routing before the analog signal reaches the VIA5004.

How much rack space does the VIA5004 require?

The VIA5004 occupies 2U in a standard 19-inch equipment rack. Given its 5000 W total output, this represents an exceptionally high power-to-rack-space ratio for commercial AV amplifier installations.

Is the VIA5004 compatible with Martin Audio CDD Series speakers?

Yes. The VIA5004 is a well-matched amplifier for Martin Audio CDD, Blackline X, and V.Series passive loudspeakers. For the full Martin Audio speaker catalog, visit creationnetworks.net/collections/martin-audio.

Can the VIA5004 be used to power subwoofers?

Yes. In bridged mode delivering 2500 watts into 4 ohms, the VIA5004 provides ample power for high-output passive subwoofer systems in commercial installations and portable live sound applications.

What warranty does the Martin Audio VIA5004 carry?

Martin Audio products purchased through Creation Networks are covered by Martin Audio's standard manufacturer warranty. Contact creationnetworks.net for warranty details and registration support.