Finally, many gigging musicians will be drawn to mic/pickup systems that can be installed directly into the body of the guitar. These will often use a piezo pickup and condenser mic combination that can be retrofitted with relative ease.
Frankly, though they can sound great, they’re no match for a separate, good quality condenser or ribbon mic. However, they come into their own for touring, ease-of-use and versatility. Just plug in and go.