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The Pinch Weasel pedal was designed for bandpass boost over a wide frequency range.

There are five  different tone sculpting settings to select the perfect center frequency for your filtering needs.

The Pinch Weasel also incorporates a two-stage, vintage style gain circuit that lets you add in a wide range of gain post filter to sculpt your tone.

The Frequency knob lets you adjust the center frequency of the filter, there is also an internal trimmer to adjust the filter depth.

The Level control adjusts the overall output level without affecting the gain or frequency of the unit.

This unit is true bypass, non-buffered and can be used with positive barrel voltages in the range of 9-12VDC

The Gain footswitch enables the user adjustable gain circuit, it can be set from clean to moderate distortion for standalone ‘OD+Filter” use. You can also use these gain controls to custom tailor your gain/distortion tone- this pedal is very happy to work with a wide range and style of gain, from subtle OD to massive gain settings. “Made to be stacked”.

The gain is adjustable thru two Gain Trimmer pots accessed by taking off the bottom cover for quick gain and filter strength setting changes, if needed.

Gain 1 sets the gain of the filter section- this is a very powerful control, default is fully CCW, as you increase in the CW direction, the gain goes up very fast- at higher settings you can ‘ring’ the filter with your picking dynamics.  At higher gain settings, you can get into the stuttering response of the filter, especially with bass and when picking hard on guitar. Notes “E” and “B” are very active at this time.

Gain 2 sets the post filter gain for both low and high gain modes.

Frequency changes the center frequency of the bandpass filter, the same way moving the treadle on a wha wha would. For increased flexibility to cover a wider range on instruments (bass to tenor) there are four available mini DIP4 switch settings for this control, accessible by taking off the bottom panel (Phillips screws X 4). There is interaction between the filter switches, see the chart below.

The switches cover the following frequency bands:

(From right to left, when the pedal is upside down, cover off)
Switch 1 This setting peaks at 1.35 KHz

Switch 2               This setting peaks at 900 Hz

Switch 3               This setting peaks at 750 Hz

Switch 4               This setting peaks at 630 Hz

Switch 2/3 This setting peaks at 525 Hz

Switch 2/3/4 This setting peaks at 420 Hz


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