The TOA DA-550F is a professional 4-channel Class-D power amplifier engineered for reliable, efficient performance in installed and portable sound systems. Delivering 4 x 550 W at 4 ohms or 4 x 350 W at 8 ohms, it offers generous headroom for distributed audio and dynamic programme material. For higher output needs, it supports bridged operation at 2 x 1100 W into 8 ohms, providing flexible configuration across zones, fills or sub-systems. With a wide 20 Hz–20 kHz frequency response, 100 dB signal-to-noise ratio and a low 0.1% THD, it maintains clean, transparent sound with minimal distortion. Practical for tight rack builds, it fits a standard 19-inch rack, occupies just 2U and weighs approximately 8.8 kg, combining compact dimensions with efficient thermal management typical of Class-D topology. Rugged construction and clear status indications support dependable day-to-day operation. The DA-550F is an excellent choice for venues, houses of worship, conference facilities and theatres, as well as touring racks that require dependable multi-channel amplification with low power consumption and high output. A robust, versatile amplifier ready to power loudspeakers in a broad range of professional audio applications.
Includes
- TOa DA-550F 4-Channel Power Amplifier – 4x550W @ 4Ω
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