Filter IV

Ivy Pedals is proud to present the Filter IV - a multi-mode analog filter effect pedal. Featuring two independent analog filters (a low-pass filter and a high-pass filter), each with independent level/frequency/resonance settings, the user can achieve a wide variety of filter types for an all-in-one filtering/tone shaping/EQ/mixing solution.

The Filter IV is capable of seven basic filter types: Low-Pass, High-Pass, Band-Pass, Band-Stop (Notch), Low-Shelf, High-Shelf, and Band-Shelf. These filters can be achieved by using the right settings for the center switch, frequency, and volume controls. Using different combinations of setting yields different filter types.

CENTER SWITCH - this switch puts the filters in series or parallel. In Series, you have a band-pass, and in parallel, you are mixing the filters together, which allows for shelving filters, using a single filter, and the notch filter.

(1 each for both the HPF and LPF)

Volume - Sets the level of the filter output. Mix level when in parallel.

Frequency - Sets the cutoff frequency of the filter, the point at which the filter starts. LPF is 'off' at 10 and HPF is 'off' at 0.

Q (Resonance) - Sets the 'quality factor' of the filter, adding a sharp peak near the cutoff frequency. Default to ~2, since 10 is razor sharp and 0 is ultra-flat

This pedal features true bypass switching and runs on a 9v center negative DC power supply.