What it does
The L+HPF allows the user to vary the cut-off frequency of the lows and the highs. In practice, that means two knobs that bracket your tone: a high cut (LPF) knob and a low cut (HPF) knob. As Bass Musician Magazine put it, "With the high cut (LPF) and low cut (HPF) knobs, you can locate just the right bandwidth to slot your bass sound between"1.
The filters work at 12 dB per octave1. The pedal also "offers a clean, quiet gain control to make up any extra gain needed," which is useful because cutting low end can cost you level on the way into the rest of your chain1.
What reviewers said
Bass Musician Magazine's reviewer found the pedal did what it promised, with one caveat about the slope1:
"it sure works as advertised and tightens up those lows as you roll up the HPF"1
The same reviewer noted the slope is not as steep as they were used to for surgical low end taming, so players looking to carve out problem frequencies with a very sharp cut may notice the difference1.
Related Broughton filter pedals
Broughton Audio builds several pedals around filtering, and the L+HPF combines what two of them do separately1:
- Broughton Audio Low Pass Filter
- Broughton Audio High Pass Filter
- Broughton Audio Always On High Pass Filter
- Broughton Audio Filter FX Loop
- Broughton Audio State Variable Filter
- Broughton Audio Resonant Filter Equalizer
- Broughton Audio JoshWah
- Broughton Audio Dynamo
Videos
Mark Robertson
Sources (1)
- Review - Broughton Audio: Josh Wah, Low+High Pass Filter, and Apex Compressor - Bass Musician Magazine, The Face of Bass, Bass Musician Magazine, 2018-12-24







