HELVIA Professional AB-Class Power Amplifier 2x150W 4 Ohm

The HELVIA Professional Class-AB Power Amplifier delivers reliable, high-fidelity amplification designed for demanding professional audio applications. Built with traditional AB-Class circuitry, it ensures a warm, clean sound with minimal distortion. The amplifier features versatile operational modes, including stereo, parallel, and bridged-mono, providing flexible connectivity options for various system configurations.

Robust Construction & Protection

Housed in a standard 2U 19-inch rack-mount chassis, it is built for integration into touring racks or permanent installations. High-quality transformers and components are used throughout for consistent performance and longevity. A comprehensive suite of protection circuits safeguards the unit against thermal overload, short circuits, and signal clipping, while a soft-start function prevents inrush current, protecting both the amplifier and connected equipment.

Performance Specifications

The amplifier delivers a rated stereo output of 2x 100W at 8 Ohms or 2x 150W at 4 Ohms. In bridged-mono mode, it provides a powerful 1x 300W at 8 Ohms. With a wide frequency response of 20Hz to 20kHz (±0.3dB), a high signal-to-noise ratio (>95dB), and an excellent damping factor (>350), it ensures precise control over loudspeakers for tight, accurate bass reproduction.

Intelligent Operation

An intelligent cooling system with temperature-controlled fans ensures efficient heat dissipation while maintaining low operational noise. The unit is designed for UK/International mains voltage (230V-250V AC) and comes fitted with a UK Type G plug. Its professional-grade performance makes it ideal for a wide range of audio reinforcement tasks, from live sound and houses of worship to conference venues and installed PA systems.