The OD3590 Rock overdrive is tuned for those that like a strong mid tone sound. You can select either symmetrical or asymmetrical Si diode soft clipping and symmetrical Ge diode hard clipping. With a rollofff frequency that still gives you that mid-hump, the Presence knob can Fatten it up. This pedal really covers a wide range of sound potential. From the beloved Tubescreamer* and Boss OD-1* to the Dirty Rat* and Klon*.
* names may be copyright of their owners and are not related to Witztronics. Sounds are similar, but depend on the gear being used.