Phase inverting preamps

Ouch, guys, it isn't left and right that are inverted. It is as KP said above, pos and neg. Just connect each pos speaker terminal on the back of your amp to the neg terminal on the speaker. They say they do it to save a gain stage necessary to flip the signal 180 degrees back to positive polarity. "Phase inversion" is commonly used to refer to reversed polarity.

Of course, Herman. It was an attempt to account for the confusion w/re phase and polarity. But it doesnt matter in this context. All the preamp owner needs to know is to reverse his speaker cables, and not left to right as he was told. He doesnt need these 1000 word essays.