This is the BoileRat by Zauber Pedals (ザウバーペダルス). As the name suggests, it seems to be based on the Rat, but the sound is completely fuzz. It's likely a custom-ordered, one-off item. I also obtained it used, so I don't have detailed information. The knobs are, from top left to right: "Volume", "Gain" From bottom left to right: "Bass Tone", "Treble Tone" The toggle switch in the middle is "clear fuzz tone" at the top, and "thick fuzz tone" at the bottom. It operates on 9V center negative. Regarding the toggle switch, it's a matter of comparison, with "clear" versus "thick," and since the fuzz tone itself is extreme, you might not feel a dramatic change. At low gain settings, it feels like "is this a distortion?", so although it's called Rat, I think it's better to consider it a fuzz effect and use it that way. The sound tends to be a thick fuzz tone that, instead of widening the range, forcibly pushes the sound mass forward. I thought it was similar to a Muff-type fuzz. It's not an easy-to-use effect for everyone, but I'd like fuzz maniacs to try it out. Since it's probably a one-off item, I also recommend it to guitarists who don't want to be the same as others. This is a sale of the unit only. There are some scratches on the back, but otherwise, there are no noticeable scratches or stains, and there are no problems with the operation. No price reduction. Thank you. #guitar #effector #fuzz #Rat #ZauberPedals