Palmer Audio wupper - Passive Line Isolation Box

The more complex the setup, the higher the likelihood of ground loops occurring. With the Palmer Wupper Line Isolation Box, peace is restored so you can enjoy your sound. No humming or crackling. The Palmer Wupper is a transformer housed in a robust aluminum and steel casing. It separates the ground potentials of two devices, preventing ground currents and ensuring that only your sound is transmitted - clean and free from interference. The Palmer Wupper was designed for guitar and bass applications; however, its brilliant, uncolored sound is also suitable for keyboards and hi-fi equipment. The inputs and outputs with 1/4-inch jacks can be configured as balanced or unbalanced. This allows the Palmer Wupper to be used for balancing unbalanced signals, enabling longer cable runs without sound degradation. Due to its passive operation, the Wupper requires neither batteries nor phantom power. This makes it extremely reliable. The Palmer Wupper is a simple, efficient hum killer: you place it between two devices, and the noise is gone. Sometimes it can be that easy!.