Boulder Amplifiers 1012 DAC Preamplifier - Manual (Page 27)

POLARITY
NOTE: Often polarity is mistakenly called phase. As phase indicates
any angle between two channels from 0 to 360 degrees, the correct term
of polarity is preferred to indicate the 180º phase change, or inversion,
available in the 1012 DAC Preamplifier.
By using the remote control, the polarity of both channels may be
changed simultaneously at the main outputs during any listening mode.
The record outputs are never affected by the polarity setting.
To change polarity, press the POL pushbutton on the remote control.
“POLARITY INVERTED” will show in the display. Also, the decimal
point after the source abbreviation (e.g. D1) will change to a “-” symbol
for as long as the polarity remains inverted, even if the source is
changed.
To return to normal (noninverted) polarity, again press the POL
pushbutton. “POLARITY NORMAL” will show in the display.
REMOTE
CONTROL
3-3