You adjust the volume with the preamp. For original volume, turn the preamp to 0 dB or turn it OFF. For louder sound, change the preamp to +0 dB. This will increase the output sound but risks clipping when the pitch is lowered or other affects are applied. The default gain is set to -3 dB to reduce the possibility of clipping.
The preamp is the first tool in the equalizer, which is under the player main menu, Editor components:
Open the Editor

Open the Editor Main Menu

Select Editor components

Select Equalizer

Set the Preamp to zero dB (+0 dB if you want it louder, -0 dB if you want to turn the volume down)

OR
Turn thePreamp off (leaves the original volume unaltered)