● This is a booster that has been further modified based on the circuit of the Storatoblaster. ● A gain adjustment knob has been added, allowing for adjustments to sudden volume changes in the latter half of the effect. ● The most distinctive feature is the built-in charge pump. By switching the CP switch up, the 9V input is boosted to 18V (actually settles around 17.5V). This allows you to enjoy the change in headroom without having to prepare a separate adapter. (※Always switch the CP switch with the footswitch off) ● Hand-wired on a universal board. ● 9V battery operation is OK. ● A 9V center-negative adapter can be used for power. ● A φ5mm high-brightness blue LED is used. ● True bypass. ● The aluminum case size is 66 x 121 x 39 (height) mm. ● EBK is a name used only for auctions. The main business focuses on blues-related amplifiers, effectors, and other equipment adjustments, production, and guitar adjustments. The number of units produced has exceeded 4000 (as of August 6, 2024), and many professional musicians use them. ● Six-month warranty: We manage customer records, so if a failure occurs during normal use, we will compare it with the shipping records and repair it free of charge within six months. (However, you will be responsible for the shipping costs.) ※ Please refrain from returns except for initial operational defects. ※ This is made only as a reference, so we do not use the exact same parts. Therefore, if you want to get the exact same sound, we recommend purchasing the actual unit.