This is the fsp power supply "ProLine Custom." It has been stored in a home studio. It has been used very little. Guitarist Yukio Nagoshi also uses this power supply. Below is the official product description: Power supplies for effects pedals often don't simply allow you to use your equipment as intended, let alone bring out its original sound and performance. The main cause of this is usually the power supply itself. This product is made to do the obvious things, obviously. Width 120mm x Depth 80mm x Height 60mm Accessories: Power cable -- Features -- It is generally said that using a power supply unit can cause a loss of high frequencies and poor sound clarity, but this power supply unit creates a uniform and consistent DC power supply, providing a stable voltage that is even more stable than batteries. It also cuts out interference noise that occurs when multiple effects pedals are connected. It may be a bit more expensive than other power supply units, but we guarantee improved sound and reduced noise. -- Specifications -- Rated Input Voltage: 100～120V Rated Output Voltage: 9V Output Polarity: Center Negative Maximum Output Current: 1300mA Current Consumption: 400mA External Dimensions: 120W x 59W x 80D (Units are mm) ※ A sticker of Doushin-san from the MOTHER series is attached, but it will be sold as is. ※ Velcro for attaching to an effects pedalboard is not attached. ※ Power-on tested Non-smoking environment Stored in a pet-free environment Please refrain from purchasing if you are sensitive to used items.