So, the first thing we need to point out is that classical and steel-strung guitars are both forms of acoustic guitar. They are simply variations of the same instrument. That said, there are a few key differences that make them look, sound and feel completely different.
The first and most obvious difference comes in the form of the strings. A classical guitar will come with nylon – or traditionally gut – strings. These specialist strings give the classical guitar its trademark mellow and warm tone. As well as its distinct sound, the nylon strings also drastically change the tension on the neck, resulting in a guitar with a lighter feel when compared to a steel-strung acoustic.
Of course, as the neck and top of the guitar don’t have the deal with the excessive force of steel strings, the classical can afford to have lighter bracing. This results in a more delicate guitar that’s insanely resonant and dynamic.
Lastly, a classical guitar will often have a broader and fatter neck. This neck shape is specially designed for fast flamenco runs and classical legato passages.