The Radial ProDI is a professional passive DI box designed for live sound, touring, theatre, studio recording, and broadcast applications. Combining outstanding audio performance with Radial’s renowned road-ready construction, the ProDI is one of the industry’s most trusted direct boxes for reliable signal conversion on stage and in the studio.
Key Features
Professional passive direct injection box
High-performance custom Radial transformer
Handles high signal levels and transients without distortion
Transformer isolation helps eliminate hum and ground loops
Plug-and-play operation with simple, reliable controls
Compact and rugged touring-grade steel construction
Clean, Natural Audio Performance
At the core of the ProDI is a custom-wound Radial transformer designed to deliver:
Smooth and natural signal transfer
Excellent transient handling
Minimal distortion at high input levels
Reduced loading thanks to high 140kΩ input impedance
The transformer also features an internal MuMETAL® shield to protect against electromagnetic interference and unwanted noise, making the ProDI ideal for demanding live production environments.
Built for Professional Touring
The ProDI is engineered to survive the rigours of touring and daily production use with:
Heavy-duty 14-gauge steel construction
Radial’s protective book-end chassis design
High-cycle switches and durable connectors
Internal RF filtering for quieter operation
Full bottom no-slip pad for electrical and mechanical isolation
Ideal Applications
The Radial ProDI is perfect for:
Bass guitars
Acoustic guitars
Keyboards and synths
Playback systems
DJ rigs
Theatre and musical productions
Corporate AV and live events
Studio recording setups
Why Use a Passive DI?
Passive DI boxes like the ProDI are especially well suited to:
Active instruments with strong output levels
Keyboards and playback devices
Long cable runs on stage
Eliminating ground loop hum and interference
Technical Highlights
Passive transformer-based design
High 140kΩ input impedance
Transformer isolated output
Ground lift switch for hum reduction
Rugged steel chassis construction
Why Choose the Radial ProDI
Industry-standard passive DI for live sound and touring
Reliable, transparent audio performance
Excellent noise rejection and isolation
Built to withstand professional production environments
Trusted by audio engineers worldwide for stage and studio applications

