Allparts EP-4585 CTS 250K/500K Concentric Audio Pot

The Allparts EP-4585 is a genuine CTS 250K/500K stacked concentric audio taper potentiometer — engineered for guitars that require independent control of two parameters on a single shaft. Designed to fit USA-sized knobs and mount directly to a standard pickguard, it delivers the smooth, reliable sweep that CTS is known for, in a format that opens up wiring configurations not possible with conventional single-gang pots.

Two Controls, One Shaft — Expand Your Wiring Options

A concentric pot stacks two independent potentiometers on a single axis — the upper shaft controls one circuit (250K), the lower shaft controls another (500K). This makes it the go-to solution for guitars where panel space is limited but tonal flexibility is essential: independent volume/tone per pickup on a two-knob body, blend controls, or custom wiring schemes that demand more from less real estate. Compatible with USA-sized knobs for a factory-correct fit.

CTS Construction — Industry-Standard Reliability

CTS potentiometers are the benchmark for American electric guitar electronics, used as original equipment on many USA-made instruments. The audio (logarithmic) taper on both gangs ensures a natural, musical response across the full sweep — no abrupt jumps in volume or tone. The solid brass shaft resists wear and provides a firm, precise feel under the knob.

Specifications

• Model: EP-4585
• Brand: CTS (sourced by Allparts)
• Resistance: 250K (upper) / 500K (lower)
• Taper: Audio (logarithmic) — both gangs
• Shaft: Solid brass
• Upper Shaft Diameter: 3/16"
• Lower Shaft Diameter: 1/4"
• Overall Dimensions: 1-3/4" H x 7/8" W
• Weight: 28g
• Knob Compatibility: USA-sized knobs
• Mounting: Standard pickguard mount
• Includes: Nut and 2 washers
• Sold: Individually
• Country of Origin: USA

Available at Reco Music Malaysia — Free delivery for orders over RM100 to West Malaysia. Fast delivery nationwide. Contact us for more information.