PVAMP20 PVAMP20 HEADPHONE INPUT VOLUME GAIN TREBLE MIDDLE BASS POWER 9 Functions 1. INPUT This is an instrument input for plugging in virtually angthing. 2.VOLUME This is the overall level control for the normal channel or overdirve channel. 3.OVERDRIVE This switch is select the drive channel or normal channel. 4.GAIN This is the distortion intensity control for the overdrive channel. 5. TREBLE This equalization control adjusts the amount of boost in the high frequency range 6.
