A stereo guitar is an electric guitar that produces two audio signals that are independent in both timbre and harmony or pitch. Depending on the electrical wiring and types of pickups used; solid-body, hollow-body and acoustic guitars can be configured stereo.
A hexaphonic pickup, having separate outputs for each of the six strings, can be configured stereo by wiring the E, D and B strings to the left output and the A, G and high E strings to the right output. This effectively creates two three-stringed instruments in the soundscape.
The most common electric guitar pickups are humbucker and single coil. These pickups create an output of all six strings. A guitar with two of these pickups can be configured stereo by wiring the bridge position pickup to the left output and the neck position pickup to the right output. This however, is not a true stereo guitar as the two output signals are independent in timbre but not harmony or pitch.
A quadraphonic or surround sound mix can be created by overdubbing two tracks (rhythm and solo) of stereo guitar. By panning the rhythm track's left output to channel 1, rhythm track's right out put to channel 2, solo track's left output to channel 3 and the solo track's right output to channel 4 the soundscape effectively consists of four three-stringed instruments. A 5.1 surround sound mix can be created by incorporating bass management to route the bass frequencies of all tracks to the subwoofer channel and a mono mix of all tracks to the center channel.