This used 2010s Electro-Harmonix Nano Bassballs pedal delivers vintage dual-envelope filter effects in a compact, rugged die-cast chassis, tailor-made for bass but equally funky on guitar. Offering two sweeping filters that respond dynamically to your playing, the pedal features a switchable distortion mode for added grit and growl. Simple controls include Sensitivity and a mini-toggle for distortion, allowing you to shape your tone from subtle throbs to aggressive growls. Despite some cosmetic wear, this unit is in good working condition and ready to energize your rhythm section. Powered by a 9V battery or standard 9V power supply (not included), the Nano Bassballs offers classic funk, synth-like tones in a pedalboard-friendly footprint.