Sometimes before Chinese New Year I visited a Swiss Illusonic customer for a new calibration. His system uses IAP2 stereo unit for the central control pre-amplifier with Swiss FM Acoustics Mono block power amplifier and Pioneer large bookshelf speakers. Due to the mono block FM Acoustics power amp has its own gain knob at the back, they were quite big differences (~10db!)there. (We adjusted it before the original measurement.) Overall a well balanced system after the calibration. Left / Right channel are matching better. Customer should be happy and good listening~!

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