JBL Nano Patch Plus is a desktop passive volume controller designed to allow the adjustment of monitoring levels from analog audio source material. An excellent way to attenuate stereo signals from audio cards, CD players, preamplifiers, and mixers.

The Nano Patch Plus employs a passive circuit design for a high-quality signal path. No active circuitry, buffers, transistors, batteries, or power supplies of any kind interfere with the Nano Patch +'s main passive output. It simply delivers the attenuated signal, unaltered, pure, and transparent.

It features XLR / TRS inputs and TRS outputs, as well as 3.5 mm minijacks, a MUTE switch, and a large rotary volume control.