Citadel Electronics is a boutique guitar-effects maker. The current range includes the Vector Octave Fuzz, Plutonium Overdrive Total Bass Annihilator, Dynazero Adaptive Noise Gate and Bus Driver analogue VCA Compressor. Together they cover octave/fuzz, bass-oriented overdrive, noise control and compression rather than one narrow effect type. The individual pedal should be checked for its intended guitar or bass role, control layout, power, bypass and connections; the product listing is the authority for the exact specification and condition.