The Radial Engineering ProAV1 is a professional passive multimedia direct box designed to connect virtually any consumer or professional audio source to a PA system, mixer, audio interface, or recording system. With multiple input options, transformer isolation, and automatic stereo-to-mono summing, the ProAV1 simplifies audio connectivity while delivering clean, noise-free sound.
Perfect for conference rooms, houses of worship, educational institutions, hotels, corporate presentations, live events, and AV installations, the ProAV1 is an essential audio tool for modern multimedia environments.
In today's AV and presentation environments, audio sources come in many forms including laptops, smartphones, tablets, media players, recording interfaces, and digital consoles. Connecting these devices directly to professional sound systems can often result in hum, buzz, ground loop issues, and complicated setup requirements.
The Radial ProAV1 is designed to solve these challenges with a simple yet highly effective passive direct box solution. It features multiple input connectors including 3.5mm stereo, RCA, ¼-inch, and balanced XLR line-level inputs, allowing seamless connection to virtually any audio source.
Its intelligent stereo-to-mono summing circuit automatically combines stereo signals into a single balanced output, reducing channel usage on mixers while ensuring all audio content is preserved.
Premium transformer isolation eliminates hum, buzz, and electrical interference while maintaining a natural, linear frequency response. The passive design requires no batteries or external power supplies, ensuring reliable operation in any environment.
Built to withstand the rigors of professional use, the ProAV1 is an indispensable tool for AV integrators, sound engineers, presenters, educators, and event professionals.
• Professional passive multimedia direct box
• Compatible with laptops, smartphones, tablets, and media players
• Automatic stereo-to-mono summing
• Transformer isolation eliminates hum and buzz
• Ultra-quiet passive circuit design
• Handles high transient signals without distortion
• Inputs: 3.5mm stereo, RCA, ¼-inch, and balanced XLR
• Balanced XLR mono output
• No batteries or external power required
• Ideal for conference rooms, AV systems, and live events
• Compact and rugged steel construction
• Reliable operation for permanent installations and portable setups
• Corporate presentations
• Conference and meeting rooms
• Educational facilities
• Churches and houses of worship
• Hotels and convention centres
• Multimedia playback systems
• Live events and exhibitions
• Audio recording interfaces
• Digital signage systems
• Professional AV installations
Supports laptops, smartphones, tablets, media players, mixers, and professional audio equipment.
Transformer isolation removes ground loop noise and electrical interference for cleaner sound.
Combines stereo sources into a single balanced output, saving valuable mixer channels.
Passive operation means no batteries, power adapters, or phantom power are needed.
Perfect for conference rooms, classrooms, churches, hotels, and multimedia presentations.
Maintains a smooth and natural frequency response with exceptional noise rejection.
Solution: Transformer isolation eliminates ground loops and electrical interference.
Solution: Automatic stereo-to-mono summing reduces channel requirements while preserving audio content.
Solution: Supports RCA, 3.5mm, ¼-inch, and XLR connections for maximum compatibility.
Solution: Passive circuitry operates without batteries, adapters, or phantom power.
Solution: Handles large transient signals and line-level sources without clipping.
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