The Adastra RS121 slave amplifier is a high-power Class D 100V line amplifier housed in a rack-mountable chassis, designed to drive medium to large commercial audio installations or to expand existing systems, accepting standard line-level audio from a mixer or RM series mixer amplifier via RCA connectors or removable screw terminals, with the ability to cascade slave outputs to additional RS amplifiers for scalable system growth. The unit also features a dedicated 100V input terminal allowing direct connection to an existing 100V speaker line or long-distance feeds using double-insulated cable, a 24V mute terminal for integration with security or emergency alert systems, and switchable speaker outputs supporting either 100V line or low impedance operation down to 2 ohms, providing installers with maximum flexibility across distributed audio applications.

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The Adastra RS241 is a high-performance 240W 100V line slave amplifier designed to expand and reinforce commercial audio systems. Built into a compact 1U rack-mount chassis, it delivers efficient Class-D amplification, making it an ideal solution for medium to large-scale installations where additional power is required without increasing system complexity. Engineered for seamless integration, the RS241 accepts standard line-level audio inputs from mixers or existing amplifier systems, enabling straightforward system expansion. It is particularly well suited to retail environments, hospitality venues, education facilities, and public address systems where distributed audio is essential. Designed for Expanding 100V Line Systems The RS241 is purpose-built as a slave amplifier, meaning it is used to increase the power capacity of an existing audio system. It can accept a line-level signal from a mixer or master amplifier and amplify it to drive additional loudspeakers across extended zones or larger areas. A key feature is its dedicated 100V input, which allows the amplifier to connect directly into an existing 100V speaker line. This enables installers to extend systems without running additional signal cables, significantly reducing installation time and complexity. This makes the RS241 particularly effective for: Expanding background music systems in retail and hospitality Increasing coverage in large commercial buildings Extending speaker lines across long distances Upgrading existing 100V installations without replacing core equipment High-Efficiency Class-D Amplification The RS241 utilises Class-D amplifier technology, delivering high output with improved energy efficiency and reduced heat generation. This results in a lightweight and compact unit that is easy to install within standard rack environments. With a 240W RMS output, the amplifier provides sufficient power for medium to large distributed speaker systems, ensuring consistent audio performance across multiple zones. Flexible Connectivity and System Integration The RS241 is designed with installer flexibility in mind, offering multiple input and output options: Line-level inputs via RCA or Euroblock terminals Line-level outputs for cascading additional amplifiers 100V input for direct system expansion Speaker outputs for both 100V line and low impedance systems The ability to cascade multiple units allows system designers to scale installations efficiently, building larger audio systems without compromising performance. Dual Operation: 100V Line or Low Impedance In addition to standard 100V line operation, the RS241 can also be configured for low impedance speaker systems, stable down to 2 Ohms. This provides additional flexibility for installers working across different system types or hybrid configurations. This dual capability ensures the amplifier can be adapted to a wide range of applications, from distributed ceiling speaker systems to more traditional low impedance setups. Emergency Mute Integration for Safety Compliance For commercial environments where safety is critical, the RS241 includes a 24V mute input. This allows the amplifier to be connected to fire alarm or emergency systems, automatically muting audio playback when triggered. This feature is essential for: Public buildings and commercial premises Schools and education facilities Hospitality venues with safety requirements It ensures compliance with safety standards while maintaining system functionality. Installation-Ready 1U Rack Design Housed in a standard 19-inch 1U chassis, the RS241 is designed for straightforward integration into equipment racks and AV cabinets. Its compact size allows it to be deployed in space-constrained installations while still delivering high output power. Front-panel controls include master volume adjustment and LED indicators for power, signal, and peak levels, providing clear system monitoring during operation. Ideal Applications The Adastra RS241 is widely used across commercial audio environments: Retail stores requiring expanded background music coverage Bars, pubs, and restaurants with multi-area audio systems Schools and colleges with distributed PA systems Warehouses and industrial spaces Offices and commercial buildings Its ability to extend existing systems makes it a cost-effective solution for growing installations.

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The Studiomaster HX2-300 is a compact and efficient 2-channel Class-D power amplifier designed for professional audio installations, live sound, and commercial AV systems. Delivering up to 2 x 255W at 4Ω within a lightweight 1U rack format, it provides a practical and cost-effective amplification solution for small to medium-sized environments. As part of the Studiomaster HX Series, the HX2-300 combines reliable performance, flexible configuration, and energy-efficient operation, making it well suited to fixed installations, hospitality venues, education settings, and portable PA applications. Compact Power for Professional Audio Systems The HX2-300 delivers: 2 x 255W @ 4Ω 2 x 150W @ 8Ω 2 x 435W @ 2Ω Bridge mode up to 870W @ 4Ω This output range makes it ideal for: Small venues and bars Retail and background music systems Corporate meeting rooms Education and classroom audio Portable PA and rental setups Its compact footprint allows it to be installed easily in racks or mobile systems where space is limited. Stable Low Impedance Performance The HX2-300 is stable down to 2Ω, allowing multiple loudspeakers to be connected per channel where required. This enables: Flexible speaker configurations Increased system scalability Efficient use of amplifier channels Combined with stereo, parallel, and bridge operating modes, the amplifier can be adapted to suit a wide range of system designs. High Efficiency Class-D Design Utilising Class-D amplification technology, the HX2-300 delivers reliable output with reduced power consumption and heat generation. Key benefits include: Energy-efficient operation Lower heat output for improved reliability Compact and lightweight construction Consistent performance in continuous-use environments The HX Series also features power factor correction (PFC) and a universal 90–250V power supply, ensuring stable operation across varying power conditions. Flexible Operating Modes The HX2-300 supports multiple operating configurations: Stereo mode – independent left and right channels Parallel mode – identical signal sent to both channels Bridge mode – combined output for higher power applications This flexibility allows system designers to tailor the amplifier to both distributed and higher-output setups. Professional Connectivity and Integration The amplifier is equipped with industry-standard connections for seamless integration: Balanced XLR inputs for low-noise signal transmission Professional speaker output connectors Multiple gain settings for accurate system matching These features ensure compatibility with mixers, DSP processors, and other professional AV equipment. Comprehensive Protection and Reliability Designed for dependable operation, the HX2-300 includes a full protection suite: Thermal protection Overload and short-circuit protection DC fault protection Output limiter to prevent clipping Front-panel LED indicators for thermal, fault, and limiter status A variable-speed fan provides effective cooling while maintaining low operational noise. Installation-Ready 1U Design Housed in a standard 1U 19-inch rack chassis, the HX2-300 is easy to install into AV racks and cabinets. Its lightweight design (approximately 5kg) makes it equally suitable for portable systems and touring applications. Ideal Applications The Studiomaster HX2-300 is widely used across professional audio environments: Bars, pubs, and hospitality venues Retail and commercial audio systems Corporate AV and meeting spaces Education facilities Houses of worship Portable PA and rental systems Its combination of compact size and flexible output makes it particularly suited to entry-level and mid-sized systems.

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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.

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The Studiomaster HX2-700 is a powerful and compact 2-channel Class-D power amplifier designed for professional audio installations, live sound, and commercial AV systems. Delivering 2 x 595W at 4Ω in a lightweight 1U rack format, it provides an excellent balance of performance, efficiency, and flexibility for medium to high-demand audio environments. Part of the Studiomaster HX Series, the HX2-700 is engineered to deliver consistent output, stable operation under low impedance loads, and reliable long-term performance, making it a strong choice for installers and system integrators. High Output Power in a Compact 1U Design The HX2-700 delivers: 2 x 595W @ 4Ω 2 x 350W @ 8Ω 2 x 1015W @ 2Ω Bridge mode up to 2030W @ 4Ω This level of output makes it ideal for: Bars, pubs, and hospitality venues Retail and commercial audio systems Corporate AV and conference spaces Education environments and lecture spaces Portable PA and rental systems Despite its output capability, the amplifier maintains a compact 1U chassis, allowing efficient use of rack space in both fixed and mobile installations. Stable Low Impedance Operation The HX2-700 is stable down to 2Ω, enabling multiple loudspeakers to be connected per channel where required. This allows: Greater system flexibility Increased speaker loading per channel Efficient system scaling without additional amplifiers Combined with multiple operating modes, the amplifier adapts easily to different installation requirements. Flexible Operating Modes The HX2-700 supports: Stereo mode – independent channel operation Parallel mode – identical signal across both channels Bridge mode – increased output for a single load This flexibility enables system designers to optimise amplifier performance based on application, whether for distributed audio or higher output zones. High Efficiency Class-D Performance Utilising Class-D amplification, the HX2-700 delivers high output with improved efficiency and reduced heat generation. Key benefits include: Lower power consumption Reduced thermal load Lightweight construction Reliable continuous operation The HX Series also features power factor correction (PFC) and a universal 90–250V power supply, ensuring stable operation across varying power conditions. Professional Connectivity and Integration The amplifier is equipped with industry-standard connectivity for seamless integration: Balanced XLR inputs for clean signal transmission Professional speaker output connectors Multiple gain settings for accurate system matching These features ensure compatibility with mixers, DSP processors, and other professional AV equipment. Comprehensive Protection and Reliability The HX2-700 includes a full protection suite to ensure safe and reliable operation: Thermal protection Overload and short-circuit protection DC fault protection Output limiter to prevent clipping Status indicators for thermal, fault, and limiter conditions A variable-speed fan provides effective cooling while maintaining low operational noise. Installation-Ready Design Housed in a standard 1U 19-inch rack format, the HX2-700 is designed for straightforward installation into AV racks and equipment cabinets. Its lightweight construction (approx. 5kg) makes it equally suitable for portable and touring applications. Ideal Applications The Studiomaster HX2-700 is widely used across professional audio environments: Hospitality venues and bars Retail and commercial installations Corporate AV systems Education facilities Houses of worship Live sound and rental systems Its combination of power and compact design makes it particularly suited to medium-sized systems requiring higher output than entry-level amplifiers.

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The Adastra RS480 is a high-power 480W 100V line slave amplifier engineered to expand and reinforce large-scale commercial audio systems. Designed for professional installation environments, it delivers efficient Class-D amplification within a robust 2U rack-mount chassis, making it an ideal solution for venues requiring increased power and extended speaker coverage. Built for scalability and ease of integration, the RS480 allows installers to expand existing systems without replacing core equipment, providing a cost-effective route to higher output and wider coverage. High Power Output for Large-Scale Installations With a 480W RMS output, the RS480 is the most powerful model within the RS Series, designed to support demanding distributed audio systems. It provides the headroom required for large venues, ensuring consistent performance across extended speaker lines and multiple zones. This makes it particularly suitable for: Large retail stores and shopping centres Bars, pubs, and restaurants with extensive coverage requirements Warehouses and industrial facilities Schools, colleges, and public buildings Hotels and hospitality venues Its high output ensures clear and consistent audio even across long cable runs and high speaker loads. Designed for Expanding 100V Line Systems The RS480 is purpose-built as a slave amplifier, meaning it accepts a line-level signal from a mixer or master amplifier and boosts it to drive additional speakers. A key feature is its dedicated 100V input, allowing the amplifier to connect directly to an existing 100V speaker line. This enables system expansion from virtually any point in the installation, reducing the need for additional signal cabling and simplifying upgrades. This approach is ideal for: Extending existing audio systems into new areas Increasing system capacity without redesign Scaling installations efficiently Efficient Class-D Amplification The RS480 utilises Class-D amplifier technology, delivering high output with improved efficiency and reduced heat generation. This results in: Lower power consumption Reduced cooling requirements Lightweight construction relative to output Reliable performance for continuous operation This makes it well suited to commercial environments where systems are expected to run for extended periods. Flexible Connectivity and System Integration The RS480 offers comprehensive connectivity options to suit a wide range of installations: Line-level inputs via RCA and screw terminals Line outputs for cascading additional amplifiers 100V input for direct system expansion Speaker outputs for both 100V line and low impedance systems Slave input and output connections allow multiple amplifiers to be daisy-chained, enabling scalable system design for large venues. Dual Operation: 100V Line and Low Impedance In addition to 100V line operation, the RS480 supports low impedance speaker configurations, stable down to 2 Ohms. This provides flexibility for installers working across different system types or hybrid setups. This dual functionality allows the amplifier to adapt to: Distributed ceiling speaker systems Low impedance loudspeaker setups Mixed system environments Emergency Mute Integration The RS480 includes a 24V mute input, allowing integration with fire alarm or emergency systems. When triggered, the amplifier can mute audio output to prioritise safety announcements. This is essential for compliance in: Public buildings Education facilities Commercial premises Hospitality environments It ensures the system meets modern safety standards without compromising functionality. Installation-Ready Rack Design Housed in a standard 2U 19-inch rack format, the RS480 is designed for straightforward installation into AV racks and equipment cabinets. Its durable construction ensures long-term reliability, while front-panel controls and LED indicators provide clear system monitoring. The compact yet powerful design makes it suitable for both new installations and system upgrades. Ideal Applications The Adastra RS480 is widely deployed across commercial audio environments: Large-scale background music systems Multi-zone hospitality venues Retail and shopping centres Public address and announcement systems Industrial and warehouse installations Its ability to expand existing systems makes it a practical and cost-effective solution for growing installations.

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The Studiomaster HX2-900 is a high-output 2-channel Class-D power amplifier designed for professional audio installations, live sound, and commercial AV environments. Delivering 2 x 765W at 4Ω within a compact 1U rack format, it provides a powerful and efficient amplification solution for medium to large-scale systems requiring strong performance and flexibility. As part of the Studiomaster HX Series, the HX2-900 combines high power density, reliable low impedance operation, and energy-efficient design, making it an ideal choice for installers and system integrators. High Power Output for Demanding Applications The HX2-900 delivers: 2 x 765W @ 4Ω 2 x 450W @ 8Ω 2 x 1300W @ 2Ω Bridge mode up to 2600W @ 4Ω This level of output makes it particularly suitable for: Bars, pubs, and hospitality venues Retail and commercial audio systems Corporate AV and conference environments Education and lecture spaces Live sound and rental applications Its high power capability ensures consistent audio performance across demanding environments and larger speaker systems. Stable Low Impedance Operation The HX2-900 is stable down to 2Ω, allowing multiple loudspeakers to be connected per channel without compromising performance. This enables: Greater flexibility in system design Increased speaker loading per channel Efficient scaling without additional amplifiers This makes it well suited to both installation and portable audio systems. Flexible Operating Modes The amplifier supports multiple operating configurations: Stereo mode for independent channel operation Parallel mode for identical signal distribution Bridge mode for increased output to a single load These options provide system designers with the flexibility to adapt the amplifier to a wide range of applications. High Efficiency Class-D Design Utilising Class-D amplification technology, the HX2-900 delivers high output with reduced energy consumption and heat generation. Key benefits include: Energy-efficient operation Reduced thermal load Compact and lightweight construction Reliable performance in continuous-use environments The amplifier also features power factor correction (PFC) and a universal 90–250V power supply, ensuring stable performance across varying power conditions. Professional Connectivity and Integration The HX2-900 is equipped with industry-standard connectivity for seamless integration into professional AV systems: Balanced XLR inputs for clean signal transmission Professional speaker output connectors Multiple gain settings for system matching This ensures compatibility with mixers, DSP processors, and other professional audio equipment. Comprehensive Protection and Reliability Designed for demanding environments, the HX2-900 includes a full protection suite: Thermal protection Overload and short-circuit protection DC fault protection Output limiter to prevent clipping LED indicators for thermal, fault, and limiter status A variable-speed fan ensures efficient cooling while maintaining low operational noise. Compact 1U Installation Format Despite its high output capability, the HX2-900 is housed in a compact 1U rack chassis, making it ideal for installations where space is limited. Height: 1U (44mm) Weight: approx. 5kg This allows for efficient rack integration in both fixed installations and mobile systems. Ideal Applications The Studiomaster HX2-900 is widely used across professional audio environments: Hospitality venues and bars Retail and commercial installations Corporate AV systems Education facilities Houses of worship Live sound and rental systems Its combination of high output and compact design makes it particularly suited to systems requiring more power than entry and mid-tier amplifiers.

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The Studiomaster HX4-600 is a compact and efficient 4-channel Class-D power amplifier designed for professional audio installations, live sound, and commercial AV systems. Delivering up to 4 x 255W at 4Ω within a lightweight 1U rack format, it provides a highly flexible and space-efficient amplification solution for multi-zone environments. As part of the Studiomaster HX Series, the HX4-600 combines reliable power output, low impedance stability, and energy-efficient performance, making it well suited to hospitality venues, retail environments, corporate AV systems, and portable audio setups. Four Channels of Flexible Amplification The HX4-600 delivers: 4 x 255W @ 4Ω 4 x 150W @ 8Ω 4 x 435W @ 2Ω Bridge mode up to 2 x 870W @ 4Ω This multi-channel configuration allows multiple speaker zones or circuits to be powered from a single amplifier, reducing rack space and simplifying system design. It is ideal for: Multi-zone hospitality systems Retail and commercial audio Corporate and conference environments Education facilities Small touring and rental systems Stable Low Impedance Operation The HX4-600 is stable down to 2Ω, enabling multiple loudspeakers to be connected per channel without compromising performance. This provides: Greater system flexibility Increased speaker loading per channel Efficient scaling without additional amplifiers This makes it particularly effective for installations where multiple speakers are required per zone. Compact 1U Design for Installation Efficiency Housed in a compact 1U rack chassis, the HX4-600 delivers four channels of amplification in a minimal footprint. This enables: Efficient use of rack space Simplified installation in equipment cabinets Reduced system footprint for multi-zone setups Its lightweight design also makes it suitable for portable and rental applications. High Efficiency Class-D Performance Utilising Class-D amplification technology, the HX4-600 delivers high output with reduced power consumption and heat generation. Key benefits include: Energy-efficient operation Reduced thermal load Reliable performance in continuous-use environments Lower operating costs 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 The HX4-600 supports multiple operating configurations: Stereo mode for independent channel operation Parallel mode for identical signal distribution Bridge mode for increased output power This flexibility allows system designers to adapt the amplifier to both distributed and higher-output applications. Professional Connectivity and Integration The HX4-600 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 This ensures compatibility with mixers, DSP processors, and other professional audio equipment. Comprehensive Protection and Reliability Designed for dependable operation, the HX4-600 includes a full protection suite: Thermal protection Overload and short-circuit protection DC fault protection Output limiter to prevent clipping LED indicators for real-time status monitoring A variable-speed fan ensures efficient cooling during sustained operation. Ideal Applications The Studiomaster HX4-600 is widely used across professional audio environments: Bars, pubs, and hospitality venues Retail and commercial installations Corporate AV systems Education facilities Houses of worship Live sound and rental systems Its four-channel design makes it particularly suited to multi-zone and distributed audio systems.

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Product Description (SEO Optimised) The Bose Professional Veritas 250BL is a compact, low impedance commercial amplifier with integrated DSP and Bluetooth connectivity, designed for small-scale audio installations requiring simplicity, clarity, and reliable performance. Delivering 2 x 50W at 4Ω, it combines amplification, mixing, and control into a single space-saving unit, making it ideal for retail, hospitality, and corporate environments. As part of the Bose Veritas series, the 250BL is engineered to provide professional-grade background and foreground audio without the complexity typically associated with commercial AV systems. Compact Amplification for Localised Audio Systems The Veritas 250BL delivers 2 x 50W at 4Ω and 2 x 25W at 8Ω, making it well suited to small to medium-sized spaces. It is ideal for retail stores, offices, cafés, salons, and reception areas where a limited number of speakers are used but consistent audio quality is required. Designed specifically for low impedance speaker systems, it provides clear and controlled audio for both background music and speech applications. Integrated DSP for Optimised Sound Performance The amplifier features onboard digital signal processing to ensure consistent audio quality and system protection. This includes dynamic EQ for improved listening at lower volumes, speaker presets for compatible Bose loudspeakers, and Opti-Voice processing for enhanced speech clarity. These features allow installers to optimise system performance without requiring external DSP hardware, simplifying installation and setup. Built-In Bluetooth and Flexible Inputs With integrated Bluetooth 5.0, the Veritas 250BL enables wireless audio streaming directly from smartphones, tablets, and laptops. This provides a convenient solution for music playback in commercial environments. Additional inputs include RCA connections for music sources and a combo XLR and jack input for microphones or line-level devices. A dedicated paging input allows integration with announcement systems, making it suitable for multi-use environments. Smart Mixer Functionality The Veritas 250BL functions as both an amplifier and a compact mixer, allowing multiple audio sources to be connected and controlled within a single unit. This makes it ideal for systems that require both music playback and microphone input without the need for additional equipment. An auxiliary output is also included, enabling system expansion or connection to recording devices. Intuitive Setup with OLED Display A front-panel OLED display and rotary encoder provide a clear and user-friendly interface for configuration and control. Installers can quickly adjust system settings, while built-in guidance simplifies the commissioning process. This intuitive design reduces setup time and ensures ease of use for both installers and end users. Silent Operation with Fanless Cooling The Veritas 250BL uses natural convection cooling, eliminating the need for internal fans. This ensures silent operation, making it ideal for noise-sensitive environments such as offices, meeting rooms, and retail spaces. It also improves long-term reliability by reducing the number of moving components. Flexible Installation Options With a compact half-rack form factor, the Veritas 250BL can be installed discreetly in a variety of locations. It can be mounted under counters, on shelves, or within racks using optional accessories, making it suitable for space-conscious installations. Ideal Applications This amplifier is designed for small-scale commercial audio systems, including retail stores, cafés, bars, offices, salons, and reception areas. It is particularly suited to environments requiring simple operation, wireless connectivity, and high-quality audio.

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