The Mad Professor Kosmos, equipped with a high-function reverb. This is a magic box packed with 11 different effects, including standard reverb, shimmer, reverb delay, and swell that produces sound later. Among them, the shimmer has a function that allows you to hold down the pedal to extend the sound, creating a synth-like spatial effect that is quite amazing. Except for a small paint chip on the upper right of the back, it is in very clean condition with no signs of use. It has already been discontinued and is a rare item that is not often seen on the market. Product Details: "KOSMOS FAC" is a pedal from the MAD PROFESSOR Factory Pedal (FAC) series. There are 4 parameters for reverb: LEVEL for adjusting the reverb volume, TONE for adjusting the high frequencies of the reverb sound, TIME for adjusting the reverb time, and the CONTROL knob, which varies depending on the reverb MODE, for adjusting the delay level, swell speed, or shimmer ratio. 〈11 Types of Reverb〉 P: Plate Reverb R: Room Reverb S: Spring Reverb H: Hall Reverb SH1: Reverb + shimmer1 SH2: Reverb + shimmer2 SH3: Reverb + shimmer3 RSB: Reverb + delay1 RM: Reverb + delay2 SW1: Swell mode 1 SW2: Swell mode 2 It has a very comprehensive content with 4 orthodox reverbs, 3 shimmer reverbs, 2 delay + reverbs, and 2 swells. All ambient tones are precisely designed, resulting in a modern reverb sound.