Bourns 500K, 3/8" Long Shaft Potentiometer - Audio Taper

Refine your guitar’s volume control with the Bourns 500K long shaft audio taper potentiometer, engineered for a smooth, natural response that closely matches how we hear sound. Designed with precision and reliability in mind, this pot delivers a progressive, musical sweep—giving you usable control across the entire rotation rather than all the change happening in a small section.

The 500K resistance value is the preferred choice for humbucker-equipped guitars, helping retain brightness, clarity, and top-end detail. It allows your pickups to breathe at full volume while still providing a warm, controlled roll-off when dialing back—ideal for everything from clean dynamics to driven tones.

Featuring an audio (logarithmic) taper, this potentiometer is specifically optimised for volume control applications. Instead of a linear change, the resistance curve is shaped to match human hearing, meaning volume adjustments feel smooth and gradual, with better control at lower levels and no abrupt drop-offs.

The long shaft construction is built for carved-top guitars such as Les Paul-style instruments, where thicker tops require additional thread length for proper mounting. This ensures a secure fit and professional finish without the need for modification or compromise.

Built to Bourns’ high manufacturing standards, these pots offer low noise operation, excellent durability, and a smooth rotational feel. Known for tight tolerances and consistent performance, they are a trusted upgrade for players, builders, and technicians looking for reliable, high-quality components.

Key Features:

• 500K resistance – Ideal for humbuckers, preserving clarity and top-end
• 3/8" Shaft diameter – Imperial sizing, perfect to replace CTS Potentiometers 
• Audio (log) taper – Natural, progressive volume response
• Long shaft design – Suits carved-top and thicker guitar bodies
• Low noise performance – Clean signal with reduced crackle
• Durable construction – Built for long-term reliability
• Smooth rotation – Even, controlled feel across the sweep

Applications:

• Volume controls in humbucker-equipped guitars
• LP-style and carved-top instruments
• Custom wiring harnesses and premium upgrades
• Repairs and high-quality component replacements

Fitment Note:

Please confirm shaft length, thread size, and cavity depth before purchase. Long shaft potentiometers are typically required for carved-top guitars, while flat-top guitars generally use short shaft variants.