I am a 2 channel audio guy, 100% PC lossless files. I run out of the PC sound card digital into a Tact 2.0. Here is my thoughts that I need outside sources to second guess. I do not believe the Tact is doing exactly what the Screen says. I have been using TrueRTA to look at changes with an uncalibrated Mic. I have now purchased a Auzentech Forte with a balanced mic input and am in the process of building a 9 volt phantom to use the Tact mic to get the same readings the Tact gets. Obsessed, yes! If you have an opinion or have done this your self, please reply.