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Home / Other Components / 19×15mm Knob Marshall Amplifier Guitar Potentiometer Switch Cap Power Amp Volume Control Round Shaft

Attributes

Brand -
Category Electronic Components Market / Other Components
Origin -
Material High-quality ABS Plastic
Color Classic Black with White Indicator Line
Dimensions 19mm Diameter x 15mm Height
Shaft Type Round Shaft (6mm)
Compatibility Marshall Amplifiers and Generic Pots
Finish Matte Textured Grip
Weight 8 grams
Package Contents 1 x Control Knob
Installation Push-on Fit (No Tools Required)
Application Volume, Tone, and Gain Controls

6 reviews

A

Anonymous

Mar 26, 2026

Rating: 5/5

Looks and feels original

Replaced all my worn-out knobs with these. They look identical to the originals that came with my amp decades ago. The matte finish prevents finger slippage nicely.

A

Anonymous

Mar 25, 2026

Rating: 5/5

Perfect replacement for my old Marshall

This knob fits perfectly on my vintage Marshall head. The size is exact, and the white line is bright and easy to see on a dark stage. Highly recommended for anyone restoring older amps.

A

Anonymous

Mar 24, 2026

Rating: 5/5

Sturdy and reliable

Been using this for three months now on my main gigging amp. It has survived transport and countless adjustments without cracking or loosening. Excellent purchase.

A

Anonymous

Mar 23, 2026

Rating: 4/5

Good quality, slightly tight fit

The plastic feels durable and looks authentic. It was a bit tight getting onto the shaft initially, but once seated, it feels very secure. Great value for the price.

A

Anonymous

Mar 19, 2026

Rating: 3/5

Decent but indicator line could be brighter

The knob itself is well-made and fits well. However, the white indicator line is a bit faint compared to genuine OEM parts. Still usable, just not as visible in low light.

A

Anonymous

Mar 01, 2026

Rating: 5/5

Exact dimensions as described

I needed a specific 19x15mm knob for a custom build, and this matched the specs perfectly. The round shaft compatibility is accurate. No slipping during heavy use.

5 FAQ

Q: What is the inner diameter of the shaft hole?

A: The inner diameter is approximately 6mm, which is the standard size for most round shaft potentiometers used in guitar amplifiers.

Q: Can I use this for a tone control as well as volume?

A: Yes, this knob is universal for any function (volume, tone, gain, presence) as long as your potentiometer has a compatible round shaft.

Q: Is the white indicator line painted or molded into the plastic?

A: The white indicator line is painted on. It is durable under normal use, but avoid using harsh chemical cleaners on it.

Q: Will this fit a potentiometer with a splined shaft?

A: No, this knob is designed specifically for round shafts (6mm). It will not fit splined or knurled shafts securely.

Q: Does this come with a set screw?

A: No, this is a push-on style knob and does not require or include a set screw. It relies on friction to stay in place.

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