Darkglass Microtubes X Mutiband Bass Drive Pedal bought this from the Gentleman Kev 2 weeks ago. Only selling as a mate has just sold me his X7 for a good price.
Literally took me 2 mins to dial in 'the tone in my head' which was a midheavy distorted tone with a huge bottom end.
Condition is mint and basically wouldn't tell it was 2nd hand and comes with box and manual etc.
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 signal, however boosting the lows can also result in additional, unwanted fuzz. To solve this paradox, audio engineers have been using multiband distortions in the studio for a few decades now.
The Microtubes X is our solution to this issue, but in a very compact form and just right for your pedalboard.
The audio is split by two variable low-pass and high-pass filters at the very start of the signal chain. The high-pass signal (mostly the mid and treble tones) is distorted using CMOS circuitry, just like our other Microtubes pedal circuits.
The low pass-signal (all bass) is left untouched. This lets the high frequencies be all crunch, attack and full of rich harmonics, all while mixing back in the undistorted lows to add gargantuan size to the overall mix.
The result is virtually unlimited fullness, size, aggression and definition, regardless of how old the strings are or even if your instrument is just boomy or thin sounding.
The Microtubes X offers all of this in a compact form with very few controls to tweak, making it almost impossible to dial in a wrong tone.
(resusing Kev's original post and pic - original link here: