Frequency response is one of the most quoted and least understood specs in guitar gear. Here is what a 20Hz to 20kHz figure actually tells you.
What the range covers
20Hz to 20kHz is the approximate range of human hearing. A system with that response can represent everything you can hear, from the lowest fundamental to the highest harmonic content.
Where your guitar actually sits
A standard-tuned electric guitar's lowest fundamental is around 82Hz. A four-string bass reaches down to roughly 41Hz. But fundamentals are only part of the picture. The harmonics that define your instrument's character extend far above the fundamentals, well into the upper range, which is why the top end of the spec matters as much as the bottom.
Why the high end is where tone complaints live
When players describe a system as sounding dull or dark, they're usually describing lost high frequency content. Harmonics above the fundamentals carry brightness, string definition, and pick attack detail. Narrow the response at the top and the signal loses exactly those qualities.
Why the low end matters most for bass
Bass fundamentals sit low enough that a system with limited low frequency response will thin them noticeably. This is why bass players are more sensitive to this spec than guitarists, and why bass-specific testing is worth doing rather than assuming a guitar demo transfers.
The cable comparison nobody mentions
Your guitar cable is not flat across this range either. Cable capacitance rolls off high frequencies, more so with longer cables and passive pickups. A wireless system with genuinely full response can therefore sound brighter than the cable you're used to, which is a difference rather than a loss.
Frequently asked questions
What does 20Hz to 20kHz frequency response mean?
The system can represent the full range of human hearing, covering both instrument fundamentals and the harmonics that define tone character.
Why does my wireless sound dull?
Usually limited high frequency response or compression, both of which reduce the harmonic detail that carries brightness and attack.
Do guitars need the full 20Hz range?
Not for fundamentals, but full response ensures nothing in the harmonic content is cut.
The ToneLink WS-4 delivers full 20Hz to 20kHz frequency response with uncompressed 48kHz/16-bit transmission.
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