Radial Engineering
Radial ProAV2 Passive Stereo Multimedia DI
Best stereo direct box for professional AV technicians and multimedia setups.
The Radial ProAV2 is a passive stereo direct box designed for seamless audio-video integration, serving as a versatile hub for multimedia connections. It provides full two-channel stereo operation, accepting a wide range of inputs including 1/4", RCA, 1/8" (3.5mm), and professional +4dB XLR. Custom transformers ensure linearity and handle hot levels without distortion, while transformer isolation effectively eliminates ground loops that cause hum, buzz, or video interference. This makes it an ideal solution for connecting various audio sources in AV environments.
$188.00
Owner Satisfaction
4.8
/ 5
Category Rank
1
/ 67
Best Direct Boxes
Price vs Category Average
-29%
Below average
Type
Passive Stereo DI (Direct Box)
/ Passive Stereo DI (Direct Box)
Who it's for
- Audio engineers prioritizing pristine signal clarity and noise-free performance
- AV technicians needing versatile connectivity for diverse consumer devices
- Touring professionals requiring gear that survives rigorous daily transport
Who should skip it
- Users working with low-output sources needing active signal boosting
- Budget-conscious buyers seeking an affordable entry-level solution
- Travelers prioritizing lightweight gear for compact mobile setups
Performance breakdown
Connectivity Versatility
Handles virtually any multimedia input source with ease and precision.
Ground Loop Rejection
Transformer isolation effectively silences hum and buzz in complex AV setups.
Signal Integrity
Custom transformers maintain linear, distortion-free audio even at high levels.
Build Durability
Rugged construction designed to survive the rigors of professional touring environments.
Ease of Deployment
Passive design eliminates the need for power supplies or battery management.
Stereo Imaging
Full dual-channel operation ensures accurate, phase-coherent stereo signal reproduction.
Key Specs
Type
Passive Stereo DI (Direct Box)
Channel Count
2
Frequency Response
20Hz to 18.5kHz
Input Connectors
1/4 Inch TS, XLR, RCA, 3.5mm TRS
Power Source
Passive
Model Number
R8001115
Max Input Level
Able to withstand exceptionally hot levels
Transformer Isolated
Yes
Features
- Full dual-channel stereo operation
- Eliminates ground loops and interference
- Handles high input levels without distortion
- Versatile multimedia connectivity
- Passive, ultra-quiet design
- Custom transformers for signal linearity
- Front panel thru-put connectors
What customers say
The Radial ProAV2 is widely regarded as the industry standard for passive stereo direct injection boxes. Users consistently praise its exceptional reliability and rugged construction, noting it withstands constant professional use across various demanding environments. Its core function—flawlessly eliminating ground loop hum and buzz when connecting consumer devices to professional audio systems—is universally lauded. Engineers value the high quality of the internal isolation transformers for achieving clean, noise free signal transfer. While priced higher than budget options, reviewers confirm the investment is justified by its superior performance and longevity. This passive unit offers signal transparency and essential features, solidifying its status as a highly recommended, indispensable workhorse for critical audio needs.
Know before you buy
No, the ProAV2 is a completely passive device. It does not require phantom power or external batteries to function, making it easy to integrate into any setup.
Yes. The ProAV2 features custom transformers that provide electrical isolation, which is highly effective at eliminating ground loops—the most common cause of hum and buzz in AV systems.
The ProAV2 is designed to handle stereo signals from a single source at a time. While it offers multiple input types like 1/8", RCA, and 1/4", you should only connect one stereo source to the unit to avoid signal interference.
Absolutely. The ProAV2 is specifically engineered to handle exceptionally hot input levels without introducing distortion, making it suitable for both consumer electronics and professional +4dB gear.
The thru-put connectors allow you to pass the original, unprocessed signal to another device, such as a local monitor or a secondary amplifier, while simultaneously sending the balanced signal to your main mixing console or PA system.
Yes, the ProAV2 is a full dual-channel stereo device. It maintains the separation of your left and right channels throughout the entire signal path, ensuring your stereo imaging remains intact.
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$188