Recording an acoustic guitar in stereo is a good choice when it s the only guitar in the song.
Recording electric guitar in stereo.
Recording the electric in stereo stereo amplifiers.
This can be achieved by running your guitar into an amp then using two mics on the amp.
Worth trying at least once in your recording career.
Even though the simplest way to record an electric guitar is mono one guitar cable direct in you can also record in stereo.
But if you have one just mic the two speakers.
This technique actually can give a guitar that fills the stereo sound stage all the way across rather than localizing separately in the two speakers.
Just like micing an acoustic guitar or a piano you need use proper mic placement so phasing is not a problem.
To be honest though you could easily achieve this by simply duplicating the signal once it s been recorded inside your daw.
The problem with that is there are only a handful of stereo guitar amps.
Rewire the pickups to give a stereo output so that you can pan the bridge pickup one way the neck pickup the other.
All the pan knob does is change the volume levels in the two channels in the stereo l r bus which you hear through headphones and speakers.
Having to negotiate a lot of different recorded stereo images while mixing can be too distracting and offer too many problems when trying to place the guitar in your mix it happens.