RADIAL PRO DI - PASSIVE DI

Radial ProDI Passive Direct Box

The Radial ProDI is a high-quality, ultra-compact passive direct box designed to deliver the full, natural sound of your instrument to the FOH without distortion or ground loop issues. Ideal for bassists, guitarists, keyboardists, and acoustic performers, the ProDI brings Radial’s professional-grade quality to project studios, regional sound companies, and live performers at an affordable price point.

Key Features

• Custom-wound Radial transformer – handles high input levels without saturation
• Linear frequency response: 20 Hz – 18 kHz for accurate, full-range sound
• High input impedance: 140 kΩ reduces loading while maintaining tone
• -15 dB PAD switch – accommodates high-output instruments
• Ground lift switch – eliminates hum and ground loop noise
• Durable construction: 14-gauge steel I-beam chassis with Radial book-end protection
• Glass-filled nylon connectors and high-cycle switches for professional reliability
• Internal mu-metal shielding – prevents electromagnetic interference
• Bottom no-slip pad – mechanical isolation and electrical insulation

Ideal Applications

• Bass guitar and acoustic instruments
• Keyboards and electronic instruments
• Stage or studio direct box use for FOH and recording

Benefits

• Delivers clean, distortion-free signal to the mix
• Protects against unwanted noise and ground loops
• Compact, rugged, and tour-ready design
• Affordable professional-grade DI solution

The Radial ProDI combines exceptional sound quality, rock-solid reliability, and portability, making it one of the most popular passive DI boxes for musicians and audio engineers worldwide.