All; I have a T-3 here but no access to any of their cal. tapes. What I do have is a cal. tape with quite a number of different freqs., at 0VU. Plus, a one minute signal of 1K. at -3VU and a one minute, 1K. signal, at -10VU. I have no idea what is on the test tapes, recommended on the SM in HiFi Engine. Has someone here gone through calibrating one of these that could tutor me? I have the Pb. amp sounding good, and that was pretty easy. I would like to start setting record functions but the SM seems difficult to understand, in places. And I'll have to say, a head bump at 40 Hz. puts the volt meter up at 2.5+ volts, if everything else is output at 1 volt. Low frequencies are in the stratosphere. Maybe a 10 or 12 band equalizer would sort that out. I would like to start a thread about this as I think I am going to need some advise. Anyone? Lu.