Originally Posted by
rusty jefferson
Many manufacturers of audio gear invert phase as a way to simplify the circuitry and therefore improve overall sound. I've most often seen preamps invert phase, requiring the speaker connections to be reversed on the amp [unless the amp also inverts phase] to remain in absolute phase. I'm not familiar with the makers of your gear but perhaps one of your amps [and/or the preamp] is inverting phase. Check the owners manuals/websites to see. It's surprising how many people are listening to music out of phase because they bought a piece of equipment that inverts the phase and they don't realize it.