The Palmer iller is a 1-channel passive line isolation box featuring galvanic transformer isolation to eliminate ground loop hum and interference. With a combo input accepting both XLR and 6.3mm jack connectors, it provides reliable signal separation for guitar, bass, keyboard, and hi-fi applications. The device converts unbalanced inputs to balanced XLR outputs, enabling longer cable runs without signal degradation. Built with a robust aluminum and steel housing, it operates passively without requiring power, batteries, or phantom power, making it extremely failure-proof. The iller delivers pure, unaltered sound with distortion-free performance up to +6 dBu.