The P-ISO combines passive isolation with the highest possible signal fidelity. Its applications range from isolation and eliminating hum, to balancing and reamplification along with any signal routing that requires a clean signal free from noise. At its core is the high-end Lehle Transformer HZ, which galvanically isolates the signal, eliminating any possibility of ground loops. The Lehle Transformer HZ was specially designed for use with high-impedance signals but also processes low-impedance signals with uncompromising sound quality. By using two amplifiers, driven by one stereo effects device, the Lehle P-ISO can successfully isolate one amplifier from the other. Thanks to its ability to pick off an unbalanced or balanced signal on the ISO output, the Lehle P-ISO is also eminently suitable as a reamplification device or as a high-quality compact DI box for all signal types.