Super Ear (May 1998):

An incorrect PC board number is quoted in the parts list - the correct number
is 98se05, as shown on the published artwork.
Also, the value of C4 is shown as 820pF in the schematic, while it is listed
as 180pF in the parts list and PC board overlay diagram. The actual value of
this capacitor depends on the break frequency you select (as outlined in the
text) so use the table in Fig.2 to select the final value for both this
capacitor and C3.