If you've wired it up correctly, it is possible for reversal of wires to speaker terminals to have taken place inside the amp, especially if you were just having work done on it.
The Stereophile test disc 1 is useful for testing phase.
WAITAMINIT! Center stage disappeared with a Modwright KWA 150SE and Daedalus Athena V.2?!
The Madness! My Plinius SA201 presented a big beautiful well imaged stage with the Daedalus Athena V.2. It was shipped and sold. 4 days later, the Modwright KWA 150SE reco'ed by Lou Hinkey took it's place and the center stage is nowhere to be found! I've rotated cables and repositioned the speaker 6 inches back and forth and toed them in with no change. I haven't rolled in new tubes in my preamp or DAC yet...It partially refocused for a moment but now is gone, baby, gone.
Anyone out there have experience with this? I imagine it's solvable....
Help a man out, brothers and sister.
Pre: Supratek Syrah, DAC: AMR DP777SE