Proceed DAP (non-CE) - Manual (Page 11)

11
6 POLARITY
The DAP is a non-inverting device—that is, digital inputs which indicate a
positive voltage generate a positive analog output. Some recordings may
benefit from deliberately inverting the polarity (sometimes referred to as
“absolute phase”) by 180
°
to correct for a similar polarity inversion incurred
during the recording process. Pressing the polarity button will illuminate
the polarity indicator LED above the button, indicating that the DAP is now
inverting the polarity of the music signal. Pressing the
polarity button a sec-
ond time will extinguish the LED and return the DAP to its non-inverting
state.