Zoom A3 acoustic preamp + fx - with box, quick guide and power supply. Excellent condition. https://www.zoom-na.com/products/guitar-bass-effects/acoustic/zoom-a3-pre-amp-effects-acoustic-guitar - from the zoom website: Features at a glance: High quality preamp can be used with both pickup and mic Super-low noise design 3-band graphic EQ Acoustic modeling for restoration of body tone even when using a pickup Remodeling presets for 16 body types and 28 popular acoust