The Nano Patch+ Passive Stereo Volume Controller (Black) from SM Pro Audio allows you to attenuate your audio signal without impacting the quality. Simply place the Nano Patch+ in your signal path between your computer or audio interface's master outputs and your stereo speakers. The Nano Patch+ will provide completely passive volume control.
The Nano Patch+ does not have any active circuitry, buffers, transistors, batteries, or power supply that can impact your audio signal. The result is completely transparent operation and uncompromised sonic integrity. Rather than controlling your output via software, which can reduce audio bit depth, use of a passive controller like the Nano Patch+ lets you keep your computer's output at unity for maximum quality.
The Nano Patch+ is easy to use, with a large rotary volume knob and a mute button. It also has XLR/TRS combo inputs that can accept balanced or unbalanced signals for terrific versatility and compatibility with a variety of systems. It has a pair of 1/4" TRS outputs, which also pass balanced or unbalanced signals to your speakers. There is even a 3.5mm mini input/output connector for use with smaller audio sources and portable speakers.