Originally Posted by
weetabix
Mono-bloc amplifiers when placed close to each other on the same shelf can affect each other's performance in an adverse way.
The spurious electromagnetic influences given-off by the power supplies can affect each others performance. Sonically, this can result in a softer, less transparent audio delivery and dynamics can be reduced, together with resolution.
That's the whole point of having mono-blocs, so you can position them right by the speakers and reap the rewards of completely separated channel information in their own chassis and individual power supplies, no left and right bleed-over, you get enhanced stereo imaging, pin-point focus and improved sound-stage.
Each and every time I've separated mono-blocs, all of the above has been observed, and this is with differing brands.
The more air space you provide between electronic components, the more improved the sound.