Martin Audio VIA2004 – Four-Channel Class D Rack Amplifier

Product Overview

The Martin Audio VIA2004 is a commercial Class D amplifier engineered for fixed installation and portable sound reinforcement where efficiency and reliability are non-negotiable. Delivering 4 x 500 watts into 4 ohms (2000 watts total), this rack-mount AV amplifier provides the multi-channel amplification required for zoned commercial audio deployments in houses of worship, auditoriums, and hospitality environments. Its switch-mode power supply and variable-speed cooling fan allow integrators to specify the VIA2004 with confidence across a broad range of load conditions. For additional Martin Audio loudspeaker options, visit creationnetworks.net/collections/martin-audio.

Product Description

The Martin Audio VIA2004 occupies a well-defined position in the VIA Series lineup as the entry-level four-channel commercial power amplifier — purpose-built for installations that demand cost-effective multi-channel amplification without sacrificing audio integrity. With four independent channels each rated at 500 watts into 4 ohms, the VIA2004 delivers 2000 watts of total output power suitable for driving Martin Audio O-Line micro-line array systems, ADORN on-wall loudspeakers, and CDD Series passive cabinets across distributed zones.

The amplifier's Class D topology achieves high power efficiency, reducing thermal output and mains current draw — a meaningful consideration in rack-dense equipment rooms where heat management directly affects system uptime. Operating across a global mains range of 115 V to 230 V (auto-sensing), the VIA2004 is equally at home in domestic and international project deployments.

A 2U rack-mount form factor makes efficient use of rack space, while the front-to-back variable-speed cooling fan supports installation in enclosed equipment bays. Comprehensive protection circuitry — covering thermal, short-circuit, and DC fault conditions — continuously monitors operating conditions to maintain full output capability in ambient temperatures up to 40°C. Signal and clip limiter LEDs on the front panel give technicians at-a-glance system status during commissioning and live events.

For system-level DSP control, the VIA2004 pairs natively with the Martin Audio DX0.5 loudspeaker management system for mid-scale installations, or the DX4.0 networked system controller for larger deployments requiring VU-NET software control and network-based monitoring. The DX4.0 and VIA2004 combination is a proven platform for scalable O-Line array installations. Browse the full Martin Audio ecosystem at creationnetworks.net/collections/martin-audio.

Key Features

• Four-Channel Class D Amplification — Delivers 4 x 500 W into 4 ohms for independent zone-level control across up to four speaker circuits.
• 2000 W Total Output Power — Sufficient headroom for small to medium commercial installations including bars, auditoriums, and educational facilities.
• 2U Rack-Mount Form Factor — Compact chassis integrates into standard 19-inch equipment racks without consuming excess rack space.
• Switch-Mode Power Supply — High-efficiency SMPS reduces mains current draw and thermal load compared to linear-topology amplifiers.
• Global Mains Auto-Sensing (115–230 V) — Single unit handles worldwide voltage standards, simplifying international project logistics.
• Variable-Speed Cooling Fan (Front-to-Back) — Fan speed adjusts dynamically to thermal demand; front-to-back airflow suits enclosed rack installations.
• Comprehensive Protection Systems — Thermal, short-circuit, and DC protection continuously monitor operating conditions up to 40°C ambient.
• Signal and Clip Limiter LEDs — Front-panel indicators provide real-time signal status for commissioning and live monitoring.
• VU-NET Compatible via DX4.0 — Pairs with Martin Audio's DX4.0 networked system controller for software-based monitoring and control.
• Exceptionally Lightweight — Low mass simplifies transport and reduces rack loading for portable and touring applications.

Typical Applications

• House of worship main system and fill amplification
• Boardroom and conference room background music and paging
• Training room and multi-purpose room distributed audio
• Commercial meeting spaces with zoned speaker coverage
• Auditoriums and all-hands rooms requiring multi-channel amplification
• Government spaces and educational facility PA systems
• Hotels, restaurants, and bar background music systems

Technical Specifications

Frequently Asked Questions

How many channels does the VIA2004 provide?

The VIA2004 is a four-channel Class D amplifier. Each channel operates independently, making it suitable for zoned commercial audio installations where separate speaker circuits require individual level control.

What is the output power of the VIA2004?

Each channel delivers 500 watts into 4 ohms, for a total system output of 2000 watts. This power level is appropriate for small to medium commercial installations driving passive loudspeakers such as the Martin Audio O-Line, ADORN, and CDD Series.

Does the VIA2004 include onboard DSP?

The VIA2004 does not include onboard DSP. Martin Audio recommends pairing it with the DX0.5 loudspeaker management system for mid-scale installations or the DX4.0 networked system controller for larger deployments requiring VU-NET software control.

Does the VIA2004 support Dante or AES/EBU digital inputs?

The VIA2004 accepts analog inputs. Dante and AES/EBU digital connectivity are not featured on this model. For networked audio input, an external Dante-to-analog bridge or a DSP processor with Dante capability would be used upstream.

How much rack space does the VIA2004 require?

The VIA2004 occupies 2U of standard 19-inch rack space, allowing efficient use of equipment rack real estate in wall plates, AV closets, and equipment rooms.

Is the VIA2004 compatible with Martin Audio CDD Series speakers?

Yes. The VIA2004 is an ideal amplifier for Martin Audio CDD Series passive loudspeakers, as well as O-Line and ADORN Series cabinets. Browse the full Martin Audio speaker range at creationnetworks.net/collections/martin-audio.

What protection does the VIA2004 provide?

The VIA2004 includes comprehensive protection covering thermal overload, short-circuit, and DC fault conditions. The amplifier maintains full output capability in ambient temperatures up to 40°C.

What warranty does the Martin Audio VIA2004 carry?

Martin Audio products sold through Creation Networks are backed by Martin Audio's standard manufacturer warranty. Contact creationnetworks.net for warranty terms and registration assistance.