- EQ effects
- distortion effects
- octave and pitch effects
- volume and expression effects
- wah and filter effects
Jen Electtronica was a company in Pescara, Italy who made electronic musical items such as organs, wah-wah pedals, fuzz boxes and ring modulators in the 1970s and 1980s. Jen made products for other companies & brands including Vox, Gem, Elka, Crybaby and Gretch.