C290: 2.2nF replaced by 1nF,
R187: 2kohm replaced by 430ohm,
R188: 2kohm replace by 4.3kohm,
around the "high pass 2" stage (U61 AD829, Fig.1) on the "fast pass" block CM6A. The board serial ID was S1809466.
In this soldering process I damaged one of copper lands for the capacitor C290, then 1nF capacitor was actually attached to R188's lead wires in parallel of R188 4.3kohm resistor.
The compound transfer functions of high pass 1 and 2 stages (U60 and U61) was measured (Fig.2). Moku:Lab was used for this measurement. The measured properties were coincide with calculated ones from the nominal resistor/capacitor values.
