Try both switch positions and choose for yourself. If it’s switching AC polarity, you don’t need no stinkin cheater plug. Phase switch for audio signal is usually on the front panel not out back near IEC. Anyway, is there no owners manual?
A/C power line polarity on new phono preamp
Getting ready to help a buddy finish setting up a new phono preamp over the weekend…he’s not sure about the A/C power line polarity (rear panel switch allows “A” to “B” switching for best performance). Any suggestions on what’s best to listen to as you switch from A to B ? Certain kinds of music and/or test tones best for this? Any specific suggestions welcome.
Thanks
Thanks