Hi, When using a guitar amplifier plugin(s) i.e Guitar Rig 5 - the right channel pan cuts the signal out when rotated fully clockwise. The sound starts to kick in at 20.0 when rotating anti-clockwise, furthermore, when the Left pan is turned fully anticlockwise the sound is loud or as you would expect. The sound also comes through both speakers despite turning the pan hard left or right. Any suggestions would be much appreciated. Cheers Michael.