There&#x27;s nothing shocking to anyone who knows how music recording (in particular stoner &#x2F; doom metal) happens. Recording yourself several times is standard practice (it&#x27;s called doubling or quading in sound engineering terms). It fattens the sound because the performer will not play exactly the same thing twice: it is just like having two guitar players in unison. Recording with several microphones is also standard practice. Mic placement has a HUGE influence on the sound you get so you will usually use at least 3 mics when recording a guitar amp; more mics just gives you more flexibility to achieve the final mix.