Pak Ea REY rey ry ® fail EDGE course Gentleness baa no 3 een Input Use a quality shielded instrument cable to connect your instrument to the Input jack socket. 2) Clean Volume Adjusts the output volume of the Clean channel. At higher settings, the amplifier will break-up inch natural overdrive, 3) Gain Adjusts the gain level for the Dirty channel. Experiment with the Gain control for a wide range of ‘crunch’ and heavily distorted tones. 4) Bass Adjusts the low-end frequencies.