The JBL Nanopatch+ is a compact two-channel passive volume controller.
The Nanopatch+ comes into its own when connected between a computer audio interface/soundcard master outputs and a pair of active (powered) monitor speakers. The Nanopatch+ allows you to maintain maximum audio resolution and attenuate your monitoring volume with confidence that the sonic integrity of your audio is not compromised. Simply delivering attenuated signals that are simple and transparent, the Nanopatch+ features a mute button, two combo inputs (balanced and unbalanced), two TRS outputs (balanced and unbalanced), a mini jack I/O and comes in black.