With a genuine Jensen transformer at its heart, the Radial JDI is a 14-gauge-steel-housed DI Box capable of screening out electrical hum and delivering high impedance signals to your low impedance gear with pristine fidelity. With a flat frequency response from 10Hz to 40kHz, the JDI delivers the pure, accurate sound of your instrument without artifacts. Unlike active DI boxes, a passive DI like the Radial JDI requires no power and even when driven hard sounds warm and musical, not distorted, making it a great sounding and nearly indestructible tool in your sonic arsenal.