Thank you for looking. This is an effector made with reference to the circuit of "Gain Helper". The parts used have been carefully selected over many years, so I believe the sound is quite good. The sound is a natural, original sound faithful type. You can use it as a buffer by lowering the gain and maximizing the volume, and from there, you can use it as a clean booster by increasing the gain. Furthermore, by increasing the gain further to create a slight distortion and adjusting the volume, it can be used as a preamp or as a gain booster, making it a versatile effector. As this is a hobbyist's work, there may be unevenness or less-than-perfect areas in the painting, lettering, and wiring. If you have any questions, please ask before purchasing. Thank you very much. *Shields and adapters are for shooting purposes only and are not included. #effector #gainhelper #booster