0.022 µF vs 0.047 µF Tone Capacitors

The tone capacitor determines how your guitar's tone control rolls off high frequencies. The two most common values are 0.022 µF and 0.047 µF.

0.022 µF Capacitor (All Rounder)

  • Gradual Roll-Off: Provides a subtle, usable sweep across the entire pot rotation.

  • Tone Character: Brighter and more articulate, retaining upper-midrange and treble.

  • Best Paired With: Humbuckers (to prevent muddy lows), though it works exceptionally well with single-coils for a subtle roll-off.

0.047 µF Capacitor

  • Steep Roll-Off: Shunts high frequencies to ground much faster as you turn the dial down.

  • Tone Character: Produces a darker, warmer tone with a pronounced treble cut.

  • Best Paired With: Traditional single-coil circuits to tame harsh high end.

Does the capacitor value affect tone at 10?

Yes, but the effect is minimal.

With the tone control fully open (at 10), the pot's resistance insulates the circuit, allowing only a fraction of high frequencies to pass to ground. The difference between 0.022 µF and 0.047 µF is subtle at full volume and only becomes obvious as you roll the tone control down.

  • Tone at 10: The capacitor sits in series with the tone pot inside a side branch running parallel to your volume pot. Because a tiny amount of signal bleeds through even when fully open, high-fidelity components like Bare Knuckle capacitors help preserve maximum clarity.

  • Tone turned down: The capacitor value takes over, driving the roll-off curve and overall brightness.

Circuit Loading: 500k Volume + 500k Tone Pot

When paired with a 500k volume pot, a 500k tone control and capacitor branch acts as a parallel load. At most audible guitar frequencies, the combined impedance levels out to approximately 250 kΩ at tone = 10:

| Frequency | 0.022 µF | 0.047 µF |

| 100 Hz | ~251.9kΩ | ~250.4kΩ |

| 500 Hz | ~250.1kΩ | ~250.0kΩ |

| 1 kHz | ~250.0kΩ | ~250.0kΩ |

| 2 kHz | ~250.0kΩ | ~250.0kΩ |

| 5 kHz | ~250.0kΩ | ~250.0kΩ |

| 10 kHz | ~250.0kΩ | ~250.0kΩ |

When the tone control is at 0 (0 Ω resistance on the tone pot), the tone branch consists only of the capacitor connected in parallel with the 500k volume pot.

At tone = 0, the combined parallel impedance drops drastically as frequency increases, shunting high frequencies directly to ground:

|Frequency | 0.022 µF |0.047 µF |

| 100 Hz | ~72.3 kΩ | ~33.9 kΩ |

| 500 Hz | ~14.5 kΩ. | ~6.8 kΩ |

| 1 kHz | ~7.2 kΩ | ~3.4 kΩ |

| 2 kHz | ~3.6 kΩ | ~1.7 kΩ |

| 5 kHz | ~1.4 kΩ | ~677 Ω |

| 10 kHz | ~723 Ω | ~339 Ω |

Practical Takeaway

  • Choose 0.022 µF for a brighter, more gradual sweep.

  • Choose 0.047 µF for a deeper, darker treble roll-off.