Check the listing for details. Darkglass Microtubes X7 - Multiband Distortion. Condition: New. Listed at 434.97 USD. The Microtubes X7 series offers the studio method that producers have used for years to cover the full Spektrum of bass distortion: from articulate high gain to punchy mild overdrive, harsh and gnarly fuzz and everything in between. You now have absolute control in constructing your vision of the perfect bass distortion, which should have texture, definition and size. - High Pass Frequency: Controls the cutoff frequency to be distorted, from 100Hz (for thicker, fuzzy saturation) to 1kHz for ultra-sharp definition. - Low Pass Frequency: Controls the cutoff frequency that is mixed back to the high pass side. The range goes from 50Hz (for sub-bass only) to 500Hz to get some clean mids. All of our items have a 30-day return policy without explanation. Notes, reading and software are excluded f.