Personal subjective theory. As I improved my system with lower capacitance cables and interconnects, purchased a WiFi streamer with a better DAC and lowered the line level from the DAC to my previously serviced older Crown PS 200, the sound stage widened noticeably…I think because the rest of the system had increased frequency response and decreased distortion. The difference had more to do with signal in and cable affect on speaker level signal out than the amp itself, maybe.
Why do some amplifiers throw a bigger soundstage than others?
Was watching a YouTube video comparing two Excellent class A amplifiers . the reviewer preferred, the one which threw a wider soundstage with the same set of speakers. Specified channel separation in db iis about the same in all quality amplifiers., so why does this happen?