Providing an upgrade to the JDI, the Radial JDI Duplex is a passive stereo direct input box perfect for killing the noise high output signal sources provide. Isolated audio transformers with a high capacity for signal handling, giving you super quiet sound without phase shift or harmonic distortion. Finally, the JDI Duplex has a ton of inputs, like a 1/4" in for instruments, RCA connectors, 1/8" TRS input, as well as multiple XLR inputs for well-rounded functionality.