This appears to be a product from johnny sound, who sells handmade effectors. I never got around to using it on a gig after purchasing it. I am selling it to organize my equipment. I have only used it at home. It has not been mounted on an effector board. I have confirmed that it works and produces sound. There is no outer box. I will pack the unit only and ship it in a cardboard box. ↓ I am reprinting the product description that was posted until a little while ago, as it has been removed. While there are several reference diagrams for the Klon Centaur, I have deliberately based it on a version that (in my subjective opinion) has a richer sound, rather than the 2009 final version. Compared to the copy models of this type that have recently become popular, you should be able to tell the difference in terms of sound clarity and low noise. ＜MOD details＞ ● 2-mode SW ・Vint: Creamy distortion with rich mid-range, similar to the actual unit. ・Mod: The distortion increases slightly, and the range widens a bit. It gives the impression of distorting more wildly than the Vint mode. Perhaps suitable for practical use if you want to distort! ＜Points of construction＞ ● Selective use of carbon resistors and metal film resistors ● Resistors are mainly 1/2W, with some constants using 1/4W ● Capacitors with good acoustic characteristics ＜Other＞ ● Power: 9V battery or 9V center-negative adapter (18V prohibited) ● Boost circuit and buffered bypass specifications, just like the actual unit ● Red LED ● Aluminum case size (excluding protrusions): Approximately 120mm x 95mm x 35mm ● Accessories: None