New Amp Dictates New Speaker Placement?

I purchased a new amplifier a few months ago and installed it into my system. A friend who has heard my system more than half a dozen times over the previous year and a half mentioned that perhaps the speakers could be moved closer together because he could locate the sound from the drivers rather than the speakers disappearing.

The speakers had been positioned a couple years ago where they are presently located, and they have provided a superb image with many amplifiers.

The system sounds great with the new amp, but I do notice some localization of sound. Sort of a three-zone image. It's not aggregious...typical audiophilia.

Is it possible that the new amplifier has affected the image to the degree that repositioning the speakers is necessary?