If a tree falls in the forest.....
How do you define 'sound'? If you define it by what your ear hears, then there is necessarily a speaker of some sort involved (guitar amp, studio monitors, headphones,...). And that means you are not hearing what you call the 'real' sound; you're hearing the sound coloured by the speaker and there are as many sounds as there are speakers.
If you define sound as the presence of a physical waveform then you can see (but not hear) the 'real' sound in the recording of the dry signal. As soon as you listen to it it's no longer the 'real' sound you are seeking; it's been coloured.
In other words, a rather meaningless question appealing only to philosophers and perhaps quantum physicists for whom the observation of an event affects the event itself.