Ah OK, gadget. I understand. I depend on my ears for my music "career" so I trust them. I absolutely understand depending on repeatable results. My day job is a software tester and I depend on automation to test which is all about repeatable results. My MPX is in the hands of an expert so I should be getting back an MPX board that is optimized. This is my first foray into electronics and it has been a good learning experience. I'm going to need to find a new project. Maybe something on one of my guitars or amps (although they are not "tubed").