The MXR KFK1 Ten Band EQ is a graphic equalizer pedal from MXR, part of the Kerry King signature line. It gives you boost or cut at ten fixed frequencies, letting you shape your tone by moving sliders rather than twisting knobs, and it can drive two amplifiers at once from its dual outputs1.
What It Does
The pedal cuts or boosts up to ±12 dB at ten different frequencies: 31.25, 62.5, 125, 250, 500, 1k, 2k, 4k and 8 kHz, plus a ±12 dB shelf at 16 kHz1. That spread runs from the lowest band at 31.25 Hz up through presence and sparkle at 16 kHz, so you can scoop mids, tame harshness, or add weight to a thin-sounding amp.
Setup is straightforward: run a cable from your guitar to the KFK1's INPUT jack, then run another cable from its OUTPUT jack to your amplifier. The second output is what sets it apart, letting you feed a second amp for a stereo or dual-amp rig1.
The manual also describes what it calls PARAGRAPHIC SLIDERS, which boost or attenuate up to ±18 dB at six different frequency centers1.
How It Compares to Other MXR EQs
"it's pretty much the same as the normal 10 band EQ that MXR has offered for years. The main difference is that this can be run into two amps"
Specifications
| Specification | Value |
|---|---|
| Filtering | ±12 dB at 31.25, 62.5, 125, 250, 500, 1k, 2k, 4k, 8 kHz; ±12 dB shelf at 16 kHz1 |
| Max input level | +14 dBV at 1 kHz (all sliders at 0 dB)1 |
| Max output level | +14 dBV at 1 kHz (all sliders at 0 dB)1 |
| Noise floor | -100 dBv, A-weighted at 5.2 Vrms1 |
The max input and output levels of +14 dBV mean the pedal handles hot signals without clipping, and the low noise floor keeps the EQ itself from adding hiss to your chain1.
Videos
tunnelvisionmusic
Questions
What does the MXR KFK1 10-Band EQ do?
It is a ten-band graphic equalizer pedal that lets you cut or boost up to 12 dB at ten fixed frequencies, from 31.25 Hz up to a 16 kHz shelf. It also has dual outputs, so you can run it into two amplifiers at the same time.
How is the KFK1 different from the regular MXR Ten Band EQ?
According to Audiofanzine, it is pretty much the same as the normal 10-band EQ MXR has offered for years, with the main difference being that it can run into two amps. It also carries Kerry King's name, as it comes from his signature line.
Sources (2)
- KFK1.pdf, Dunlop Manufacturing, Inc., 2019
- MXR KFK1 Ten Band Equalizer, Audiofanzine, 2026
