I know really nothing about electronics. But found this which may be of some help to you.
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Amplifier input impedance affects guitar tone by interacting with the guitar pickup's output impedance and the cable's capacitance, potentially causing tonal changes like dullness, treble loss, or a lack of sustain. Lower input impedances load down pickups, potentially creating a duller sound, while higher impedances can accentuate the effects of cable capacitance, leading to a darker tone. [1, 2, 3, 4]
Elaboration: [2]
* Pickup Output Impedance: Guitar pickups have a certain output impedance, which varies with frequency. At higher frequencies, the impedance increases. [2]
* Amplifier Input Impedance: The amplifier's input impedance acts as a load on the pickup. [1, 3]
* Impedance Matching: When the amplifier's input impedance is too low, it loads the pickup, potentially leading to a reduction in treble response and a lack of sustain. [1, 3]
* Cable Capacitance: Longer cables have higher capacitance, which can interact with the amplifier's input impedance, especially at higher values, to roll off high frequencies and create a darker tone. [4]
* Ideal Input Impedance: A high input impedance, typically around 1 megohm, is generally considered optimal for guitar pickups, as it minimizes loading effects and preserves the pickup's tone. [3, 5]
* Impact on Tone: Mismatched impedances can result in a loss of high frequencies, a less responsive tone to volume and tone controls, and potentially a lack of sustain. [1, 3, 6]
Generative AI is experimental.
[1]
https://www.sweetwater.com/insync/the-truth-about-guitar-connections/
[2]
https://www.harmonycentral.com/arti...t-impedance-for-guitar-effects-and-amps-r428/
[3]
https://www.guitarworld.com/features/how-impedance-affects-your-guitar-tone
[4]
[5]
https://craiganderton.org/how-to-check-input-impedance/
[6]
https://forum.pedalpcb.com/threads/whats-all-this-impedance-stuff-about.4903/
