The H24 is a steep high-pass filter pedal by Sine Effect Electronics. This filter pedal has an adjustable frequency of 25-400Hz, and a slope of 24dB/octave (4th-order). This pedal is ideal for electric bassists and guitarists who wish to tighten up their low-end. The pedal outputs unity gain and is designed to be low-noise.
Demo by the wetter bass (EN)
Official Product Video (EN)