Dan Mills wrote: I'm very sceptic that meters for studios in the box are in sync with external equipment. I'm also very sceptic about the quality of measure accurately for external equipment in any home recording studio, any semi-pro studio and even some pro studios, were the equipment isn't checked on a daily basis. Absolute accuracy becomes important especially if tapes are sent from one studio to the other. The effective value is sine wave +3dB = 0 and nothing else. Am I wrong?