Headstock

The headstock is a part of a stringed instrument, most commonly guitars, but also found on instruments such as mandolins, banjos, and violins. It is located at the end of the instrument's neck furthest from the body. The primary function of the headstock is to house the tuning mechanisms (tuning pegs, tuning machines, or geared tuners) used to adjust the tension of the strings, and thus alter their pitch.

The shape and design of the headstock vary widely between instrument types and manufacturers, often serving as a distinctive visual element and brand identifier. Headstocks can be straight or angled back from the neck. Angled headstocks increase string pressure at the nut, theoretically improving sustain and tuning stability, though they require greater care in construction. Straight headstocks typically require a string retainer (often called a string tree) to achieve a similar downward pressure.

Headstocks are typically made from the same material as the instrument's neck (most commonly wood), although other materials can be used. They may be plain or adorned with inlays, logos, or other decorative elements. The number of tuning machines located on the headstock corresponds to the number of strings on the instrument. They can be arranged in a variety of configurations, such as all on one side (common on many guitars), or in a balanced arrangement with an equal number on each side (typical of violins and some guitars). The term "paddle headstock" is often used to describe headstocks that have a wider, flat shape resembling a paddle.