Audio Phase Distortion processing in Apple devices

Hi to all!

I've noticed that Apple devices outputting sound with Multiband Phase Distortion processing in OS master audio output. If I connect external speakers - wired, wireless, headphones etc. sound seems like is unprocessed. This type of processing is in laptops (2017-2020), iPhones (10, 11) (don't have iPad, so I don't know.). So, how you can hear this type of processing? The sound become very thick, very fat and meaty and a bit compressed in dynamic range. It's more like radio type of processing. Everyone who is interested can do a simple test - record audio message in WhatsApp and send to somebody with Android and/or Windows device and then listen this voice message in iPhone / Mac and Android / Windows. The type of sound from Apple device will be like a radio VoiceOver type of thing, where Android (Any) or Windows (Any) will sound natural, as is. So - the question is - HOW TO TURN THIS PROCESSING OFF? I am a content creator and I need to hear exactly what it is without any processing, and Apple processing is huge! Help please to investigate. Thanks!