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Home / Car Washers / Marshall Guitar Amplifier Effects Pedal Potentiometer Rotary Switch Knob with Splined Shaft Cap

Attributes

Brand -
Category Home Appliances / Car Washers
Origin -
Brand Marshall
Material Durable Plastic with Metal Insert
Shaft Type Splined Shaft (6mm)
Compatibility Guitar Amplifiers and Effects Pedals
Color Classic Black with Gold Logo
Diameter 18mm
Height 12mm
Package Contents 1x Rotary Switch Knob
Mounting Method Push-on Fit with Set Screw
Style Vintage Marshall Iconic Design

6 reviews

A

Anonymous

Mar 24, 2026

Rating: 4/5

Good fit, slightly loose

The knob looks amazing and the branding is crisp. It fits my pedal board potentiometers well, though it was a tiny bit loose until I tightened the set screw.

A

Anonymous

Mar 24, 2026

Rating: 5/5

Authentic Marshall feel

Exactly what I needed to restore the look of my vintage effects unit. The plastic feels sturdy and not cheap like other aftermarket knobs.

A

Anonymous

Mar 20, 2026

Rating: 5/5

Best looking knob available

I bought three of these for my custom pedal build. They elevate the entire aesthetic of the project. Highly recommend for any Marshall enthusiast.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Fast shipping and great product

Arrived quickly and was packaged securely. The knob snaps on easily and the grip is excellent for making precise adjustments during live shows.

A

Anonymous

Mar 08, 2026

Rating: 3/5

Check your shaft size first

The knob itself is beautiful, but make sure you have a splined shaft. I tried to force it onto a smooth shaft initially and realized my mistake. Works great now on the correct pot.

A

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect replacement for my old amp

This knob fits perfectly on my Marshall head. The splined shaft matches exactly, and the gold logo looks authentic. Great quality for the price.

5 FAQ

Q: Is the gold logo printed or molded?

A: The iconic Marshall logo is printed using high-quality durable ink that resists wear from regular use.

Q: Can I use this on a car washer machine?

A: No, this product is specifically designed for musical instrument amplifiers and effects pedals. It is not suitable for car washers or industrial machinery.

Q: Will this fit a standard Bourns potentiometer?

A: Yes, this knob is designed to fit standard 6mm splined shafts commonly found on Bourns and similar quality potentiometers used in guitar gear.

Q: Does this come with a set screw?

A: Yes, the knob includes a small metal set screw on the side to secure it firmly to the shaft and prevent rotation.

Q: What is the return policy if it doesn't fit my pot?

A: We offer a 30-day return policy for unused items in original packaging. Please ensure you verify your shaft type before installation.

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