I use my mic mixer (behringer UB1202) with my portable minidisc player (sony MZ-N1) for recording. When Automatic Gain Control (AGC) is on, the levels on the UB1202 and the minidisc player seem to correspond well. When I turn AGC off (manual mode), the recording is totally clipped even though the level indicators on the UB1202 are green. To get a decent recording using manual levels, I have to turn the ouput right down on the mixer. Is this because the maximum input levels are different for AGC and manual modes or is it some other problem?