The Radial J48 is an industry-recognized top-tier active DI box, designed as a professional-grade signal converter for electronic instruments and high-output sources. Using a high-quality operational amplifier circuit powered by 48V phantom power, it offers extremely high input impedance and excellent frequency response, ensuring the complete transmission of signals from electric guitars, electric basses, keyboards, and electronic drums. Class-A separate circuit design combined with high-end Jensen transformers achieves professional audio quality with ultra-low distortion and a wide dynamic range.

The 80Hz high-pass filter removes low-frequency noise, the integrated -15dB attenuation switch manages high-level signals, and the signal splitting feature enables simultaneous transmission of instrument signals to the mixing console and speaker.  Professional musicians now have the most dependable signal processing solution thanks to the robust 14-gauge steel casing, which is a standard piece of equipment in world-class recording studios and live performances.