Darkglass Microtubes X - great condition in box.  Only selling following an upgrade to the X7  Darkglass Microtubes X Mutiband Bass Drive Pedal Distorting bass has always been a very challenging engineering endeavour. In order to achieve a punchy and aggressive distortion, that is also full and fat-sounding, you really need to reconcile two contradicting conditions. The tightness comes from attenuating bass frequencies before saturation, which will also result in a very thin signa