The Radial ProDI is an industry-standard, single-channel passive direct box. It converts a high-impedance unbalanced instrument signal (e.g., guitar or bass) into a low-impedance balanced signal, allowing you to run long cables to a mixing console or audio interface without noise or signal loss. [1, 2, 3, 4]Key Features

• No Power Required: Because it's passive, you never have to worry about batteries or phantom power.[1, 2, 3]
• Custom Isolation Transformer: Features an Eclipse ET-DB2 transformer that handles extreme signal levels without distortion and eliminates ground loops (hum and buzz). [1, 2, 3, 4, 5]
• Built "Like a Tank": Housed in a heavy-duty 14-gauge steel chassis with a welded I-beam inner frame, protecting the internal components from stage abuse. [1, 2]
• Onboard Controls: Includes a -15 dB input pad for taming high-output sources and a ground lift switch to eliminate unwanted electrical noise. [1]
• Connectivity: Features 1/4 " Input, 1/4 " Thru (for sending a signal to your stage amplifier), and a balanced XLR output.