Radial ProDI 1 Channel Passive Instrument Mono Direct Box with Custom Transformer

The Radial ProDI is a high-quality, passive mono direct box that's perfect for use with acoustic guitars, bass guitars, electric pianos, and synthesizers. The ProDI's custom transformer helps to deliver the highest performance possible, virtually eliminating issues with noise. And, as with all Radial DI boxes, the ProDI is incredibly reliable and easy to use.

The Radial ProDI is a high-quality, 1-channel passive direct box designed to deliver exceptional sound quality and reliability in a variety of live sound and studio applications. Engineered for use with instruments like electric guitars, basses, and keyboards, the ProDI provides a clean, accurate signal transfer from your instrument to the mixing console or recording system.

At the heart of the ProDI is a custom-designed transformer, meticulously crafted to handle high signal levels and ensure minimal distortion. This transformer provides superior isolation and noise rejection, which is crucial for maintaining signal integrity in demanding environments. The passive design means the ProDI doesn’t require external power, making it a convenient choice for on-the-go performances and studio setups.

The ProDI features a rugged, all-steel construction that ensures durability and longevity. Its compact, lightweight design makes it easy to transport and integrate into any setup, while its simple operation ensures it can be used effectively by musicians and audio engineers alike. The direct box includes a ground lift switch to eliminate hum and noise caused by ground loops, further enhancing its versatility.

Whether you’re performing on stage or recording in the studio, the Radial ProDI delivers reliable performance with exceptional audio quality, making it an essential tool for any serious musician or audio professional.

Features

• Type: Passive direct box
• Channels: 1 (mono)
• Transformer: Custom-designed for high signal handling and minimal distortion
• Inputs: 1/4" TRS (instrument)
• Outputs: XLR (balanced)
• Ground Lift Switch: Yes (reduces hum and noise)
• Construction: Rugged steel chassis

Specifications

• Type: Passive Direct Box
• Channels: 1 (mono)
• Transformer: Custom-designed transformer
• Function: Provides high signal handling and minimal distortion
• Isolation: Superior isolation and noise rejection
• Input Connector: 1/4" TRS (instrument)
• Output Connectors: XLR (balanced)
• Frequency Response: 20 Hz to 20 kHz
• Total Harmonic Distortion (THD): < 0.05%
• Input Impedance: 1 MΩ
• Output Impedance: 150 Ω
• Maximum Input Level: +20 dBu
• Ground Lift Switch: Yes (to eliminate ground loops and reduce hum)
• Material: Heavy-duty steel chassis
• Design: Compact, rugged, and roadworthy