http://www.ckkelectronic.com/product/lunar/lunar.html Lunar Drive is a vintage tube amp tone like the "Dumble", which is a long-lost classic. To achieve this goal, CKK paid special attention in optimizing the frequency response characteristics of the circuit. It makes Lunar Drive sound more like a tube amp. It also enhances the dynamic range. All these make the Lunar Drive more detailed & responsive during your playing. The EQ of Lunar Drive contains two sections, high frequency and low frequency. Just like the EQ of vintage tube amp. The dynamic range of distortion is large, and the change from clean to crunch is natural. Lunar Drive is a distortion tone that can quickly respond to dynamic changes of details of the strings.