The JHS Pedals Digitech Whammy Mod is a pitch shift effect pedal optimized for electric bass guitar, offering both "Classic" and "Chord" (polyphonic) tracking modes. This pedal features MIDI input for control, 21 different programs, and true bypass. Users have praised its sound quality, tracking, and versatile features, including harmonies and a detune option. Compared to the Whammy version 5, it retains the lower register better when used with bass. It also works great with a Darkglass Microtubes preamp to create an extension of your bass sound, but requires careful blending to avoid it sounding 'too much'.
Guitarists lauded the pedal's exceptional sound quality, impressive tracking, and versatile capabilities, particularly the ability to create harmonies. They appreciated the wide range of features and the well-built design, as well as the pedal's capacity to add depth to their arrangements. While some noted that the expression pedal might require occasional recalibration, this was a minor drawback. Some reviewers highlighted the pedal's ability to retain the lower register better when used with bass compared to other models.