Check the listing for details. Electro-Harmonix Nano Battalion Bass Preamp & Overdrive. Condition: New. Listed at 133.30 USD. Powerful, Versatile Tone for Active and Passive Basses The Electro-Harmonix Nano Battalion is a bass preamp and overdrive pedal with all-analog circuitry that delivers a formidable arsenal of bass tones in a compact, tour-tough chassis. The Nano Battalion's big sibling is very popular at Sweetwater; and by popular demand, Electro-Harmonix is now offering the Battalion's tonal onslaught in a pedalboard-friendly, single-wide stompbox form factor. The Nano Battalion's versatile MOSFET drive circuit serves up everything from subtle overdrive to heavy, saturated distortion, while its 3-band EQ (with three EQ position modes) gives you maximum sound-shaping control and flexibility. The Nano also offers three signal flow modes that yield unique tonal variations.