Voltage Controlled Amplifiers
While MONITOR2USB’s Volume control is mechanically similar to an analog control, its use of Voltage Controlled Amplifiers (VCA) provides several major benefits. First, since a DC current flows through the volume control (instead of the audio signal) there is no degradation in sound quality, and none of the pops and crackles typically produced by an audio-taper volume control. That current is what actually controls the levels of the separate left and right amplifiers. Second, both the left and right channels remain proportionately accurate to their input levels. Third, better left/right channel separation is maintained, because there are no audio signals present at the volume control. And finally, you get amazingly precise and repeatable level settings you can count on.