I assume the analog gear I bought is calibrated correctly but matching the levels between all my analog equipment (converters, summing amps and processors) needs to be matched so everything flows openly and sounds the best is can. Yes and why? Now that I have converters with greater gain staging input and output control ( +24, +19, +13, +4.2) everything is more precise so I would appreciate critical detail on how to get the best out of my system. If you walked into my studio what are the steps you take to calibrate everything? Other than using a screwdriver to adjust the needle on a VU meter back in the 70's, I've never formally calibrated a studio with analog gear like I have now. In fact, I've never even used a multimeter for anything other than testing cable connections. To calibrate your gear, this is what I read: Get a multimeter. Okay, what kind of multimeter? Analog, Digital, or! is there a plugin for Sequoia?