FBT MDA 4500 — 4-Channel 4x500W DSP Install Amplifier
MDA 4500 Overview
The FBT MDA 4500 is a compact, energy-efficient 2U rack-mount Class D amplifier designed for flexible multi-zone installation environments. It delivers 4 channels x 500W at 4Ω in LO-Z mode, or can be configured for 2 channels x 1000W at 100V in HI-Z mode, making it adaptable to a wide range of distributed audio systems. A built-in DSP with browser-based access via integrated WiFi simplifies commissioning and ongoing system management without requiring dedicated software. This amplifier is well suited for system integrators, install contractors, and AV professionals working in venues, houses of worship, corporate facilities, and multi-zone commercial environments.
Preloaded FBT speaker presets streamline setup, while S/PDIF I/O and GPIO expand connectivity and control options for integrated system designs.
Key Features
- Class D Amplification — energy-efficient topology in a compact 2U rack-mount chassis, minimizing power consumption and heat output in install environments
- LO-Z Mode — delivers 4 channels x 500W at 4Ω for direct low-impedance loudspeaker connections
- HI-Z Mode — reconfigures to 2 channels x 1000W at 100V for distributed 70V/100V line systems across large zones
- Built-in DSP — onboard digital signal processing accessible directly via a web browser for EQ, routing, and system tuning without additional software
- Integrated WiFi — enables wireless browser-based control and configuration, reducing cabling requirements during setup and commissioning
- Preloaded FBT Speaker Presets — factory-loaded presets for FBT loudspeakers accelerate system alignment and reduce setup time
- S/PDIF I/O — digital audio connectivity for integration with digital signal chains and source devices
- GPIO — general-purpose input/output for external control integration, enabling automation and third-party system control
Connectivity & I/O
- S/PDIF digital audio input and output
- GPIO for external control and automation
- Integrated WiFi for browser-based DSP access

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