Speck Electronics MicPre 5.0 - Manual (Page 27)

The Output Signal Path (O.S.P) switch gives you the choice of two
paths for the signals originating at the mic or D.I. inputs and
exiting at the XL preamp output.
When set to the “Normal” position, the mic or D.I. signal will pass
through the main preamp stage, the insert send and return jacks,
and high pass filter section before passing to the XL output
connector. The "Normal" signal path is shown with the bold line in
the flow chart below (Figure 8).
When the O.S.P. switch is set to the “direct” position, the mic or
D.I. signal passes only through the main preamp stage before
passing to the pre output XL connector. The “Direct” switch setting
bypasses the insert send and return jacks and the filter section. The
"Direct" signal path is shown with the bold line in the flow chart
below (Figure 9).
18. O.S.P.
(Output Signal Path)
Figure 9. Output signal path (O.S.P.) "Normal" setting
Figure 9. Output signal path (O.S.P.) "Direct" setting
Chapter 3 Operation Section 21