Description

The Studiomaster HX2-500 is a compact, high-efficiency 2-channel Class-D power amplifier designed for professional audio installations, live sound, and commercial AV systems. Delivering 2 x 425W at 4Ω in a lightweight 1U rack format, it offers an ideal balance of performance, flexibility, and reliability for a wide range of applications.

Part of the Studiomaster HX Series, this amplifier is engineered to provide consistent power output, stable operation under demanding loads, and efficient long-term performance, making it a practical solution for installers and system integrators.

High Output Power in a Compact 1U Design

The HX2-500 delivers:

• 2 x 425W @ 4Ω
• 2 x 250W @ 8Ω
• Up to 735W per channel @ 2Ω
• Bridge mode up to 1450W @ 4Ω

This makes it suitable for:

• Small to medium venue sound systems
• Bars, pubs and hospitality environments
• Corporate AV and conference spaces
• Education and presentation systems
• Portable PA and rental setups

Despite its output capability, the amplifier maintains a compact and lightweight 1U form factor, optimising rack space and simplifying installation.

Stable Operation Across Multiple Load Configurations

The HX2-500 is stable down to 2Ω, allowing it to drive multiple loudspeakers per channel where required.

It supports:

• Low impedance speaker systems (2Ω, 4Ω, 8Ω)
• Stereo, parallel, and bridge modes for flexible system design

This flexibility enables the amplifier to be deployed across a variety of system configurations, from simple stereo setups to higher power mono applications.

High Efficiency Class-D Performance

Utilising Class-D amplification technology, the HX2-500 delivers strong output with improved efficiency and reduced heat generation.

Key benefits include:

• Lower power consumption
• Reduced thermal load
• Compact, lightweight construction
• Reliable operation in continuous-use environments

The amplifier also features power factor correction (PFC) and a universal 90–250V power supply, ensuring stable performance across varying mains conditions.

Flexible Operating Modes for System Design

The HX2-500 supports multiple operating modes to suit different installation requirements:

• Stereo mode – standard two-channel operation
• Parallel mode – identical signal to both channels
• Bridge mode – increased output power for a single load

These options provide system designers with the flexibility to optimise amplifier performance based on speaker configuration and application requirements.

Comprehensive Protection and Reliability

Designed for professional use, the HX2-500 includes a full protection suite to ensure long-term reliability:

• Thermal protection
• Overload and short-circuit protection
• DC protection
• Output limiter to prevent clipping
• Status indicators for fault, thermal, and limiter conditions

A variable-speed fan ensures efficient cooling while maintaining low operational noise.

Professional Connectivity and Integration

The HX2-500 is equipped with industry-standard connectivity for seamless integration into AV systems:

• Balanced XLR inputs for clean signal transmission
• Professional speaker output connectors
• Multiple gain settings for system matching

These features ensure compatibility with mixers, DSP processors, and other professional audio equipment.

Ideal Applications

The Studiomaster HX2-500 is widely used across a range of professional audio environments:

• Bars, pubs, and hospitality venues
• Retail and commercial audio systems
• Corporate AV and meeting rooms
• Education facilities
• Houses of worship
• Live sound and rental systems

Its combination of compact size and flexible power output makes it particularly suited to small-to-medium scale systems.

Specifications

• 8ohms Stereo: 2x250watts
• 4ohms Stereo: 2x425watts
• 2ohms Stereo: 2x725watts
• 16ohm Bridged: 500watts
• 8ohm Bridged: 850watts
• 4ohm Bridged: 1450watts
• Dimensions (WxHxD): 483mm x 44mm x 323mm
• Net Weight: 5.0kg