Johnny Cash

How would I go about trying to recreate the Vocal sound that Johnny Cash has on those American Recordings songs (the last few albums he released). You know the kind of really warm but upclose sound, kinda like he is singing in the same room as you ?

I know that having that amazing voice would be a great starting point ! But what kind of Mics, positioning, outboard gear, reverb, mixing techniques etc should I be looking at ?

thanks peoples
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