Cornerstone Antique V3 Kazuki Isogai A modern TS-系 overdrive. It has two modes: Normal and Hot (increased gain), making it very user-friendly. It has a special exterior designed for guitarist Kazuki Isogai. The internal circuit is the same as the standard version. I've used it a few times on my board. Sound check confirmed. All accessories are included. There is also a postcard with his signature. Please understand that this is a used item. No returns or exchanges, please.