State-of-the-art Passive DI Box The Lehle P-ISO is a state-of-the-art passive DI box with ultra-high-quality sound. You can deploy the P-ISO to isolate signals and eliminate hum, and balance high-impedance signals. You can also use it for reamplification or any other application that demands a clean, noise-free signal. This top-shelf DI boasts an Lehle Transformer HZ, which galvanically isolates your signal to eliminate ground-induced interference. While it's designed for use with high-impedance signals, the P-ISO also tackles low-impedance signals with exceptional quality. And since the P-ISO is a passive device, there's no need for a power supply. The Lehle P-ISO also boasts an optimized size and weight, ensuring it fits effortlessly under your pedalboard or in your pocket.Lehle Transformer HZ supplies über-transparent isolation We've all experienced ground-induced interference — that dreaded 60Hz hum when two pieces of gear are connected to each other. This occurs when your system contains multiple