Radial ProD2 2-channel Passive Instrument Direct Box

Passive vs. Active DI The Radial ProD2 and ProDI (mono version) are full range passive direct boxes. Active direct boxes employ electronic circuits to change the impedance from hi-Z to lo-Z and balance the signal. Passive DI's employ a simple passive transformer to do the work. Active DI's require batteries, 48V phantom-power or external power supplies to power their circuits. Passive transformer-equipped direct boxes do not require any power to perform their task. The advantage of a transformer over typical active circuits can be summarized as "a great device to reduce system noise" in a sound system. to accomplish the task of noise elimination, the Radial ProD2 features custom Radial transformers and being completely passive, does not require batteries or a power supply. Custom Isolation Transformer The Radial ProD2 is equipped with custom made audio transformers, which provide exceptional signal handling without saturation. More importantly, the ProD2's custom transformers exhibit extremely low phase distortion in the critical bass and mid regions. The ProD2's transformer provides 100% isolation to eliminate hum and noise-causing ground loops while maintaining signal integrity. Inside the ProD2 you'll also find isolated XLR connectors to eliminate chassis ground potential and a military spec PC board with full surface ground plane to reduce susceptibility to RF noise. The result is exceptional clarity and definition at an attractive price point. Really Easy to Use The best feature of the ProD2 is 'plug & play' ease of use. All you do is connect the instrument to the 1/4" inputs, the 1/4" through jacks to the stage amplifier(s) or mixer and the XLR outputs to the mixing console and you're done. Any distortion? Hit the -15dB pad. Any noise? Just depress the ground lift switch. You will find that with acoustic guitars and basses, the natural tone of the instrument will shine through with a smooth and musical rendering. For electrically powered devices such as keyboards, the ProDI will immediately eliminate troublesome ground loops while delivering solid dynamics with a full rich sound.