This is old equipment. It's the Guyatone EX2 Exciter guitar effector. Features: It sharpens the sound's contours and emphasizes the high frequencies, creating a crisp sound. Effects: Rather than drastically changing the tone, it subtly and naturally enhances the presence of the sound. Uses: It meets the needs of those who want "a little more sharpness and clarity" when creating sounds, and it can also change the distortion components by placing it before or after distortion. Condition: Many used items are in circulation, and there may be signs of use such as paint剥がれ (peeling) and small scratches and dirt. This pedal adds harmonic components to the volume. It's difficult to understand with a clean tone, but it changes the distortion components when placed before or after distortion. It's like a gain-up booster with added harmonic components. The distortion becomes more energetic. I think it can also be used for bass. It's from the early 90s, maybe even the 80s. It comes with the original box, instruction manual, and warranty, but it's a used item stored at home. Please check the images and understand before purchasing.