IMHO, a "more holographic" presentation has nothing to do with whether the amp is a monobloc or a stereo version.
Circuit Design, implementation and parts quality has way more to do with sound than if the amp(s) is/are a one piece or two piece design.
I've owned MANY of each kind and have found both to be either good or bad, but had nothing to do with them being a mono or stereo unit.
I should add that each mono amp does has it's own power supply and of course, they have less likelihood of any interaction between channels, since there is only one, but again, a poorly designed mono amp is just that, a poor design. Same holds true for stereo amps.
Plus you need to be aware that the amp/speaker interface plays a big part also.
Circuit Design, implementation and parts quality has way more to do with sound than if the amp(s) is/are a one piece or two piece design.
I've owned MANY of each kind and have found both to be either good or bad, but had nothing to do with them being a mono or stereo unit.
I should add that each mono amp does has it's own power supply and of course, they have less likelihood of any interaction between channels, since there is only one, but again, a poorly designed mono amp is just that, a poor design. Same holds true for stereo amps.
Plus you need to be aware that the amp/speaker interface plays a big part also.