Darkglass Electronics Microtubes X7Microtubes X7 Distorting bass has always been a very challenging engineering endeavor: in order to achieve a punchy, and aggressive distortion that is also full and fat sounding you need to reconcile two contradicting conditions: The tightness comes from attenuating bass frequencies before saturation, which will also result in a very thin signal. But boosting the lows will result in additional, unwanted fuzz. To solve this paradox, audio engineers