Zoom A2.1u - Acoustic Pedal (USB + Exp Pedal) Features: 40 preset effects for Acoustic Guitar, 40 programmable memory patches 7 effect modules with 45 effect types Includes guitar and body-style modeling 32-bit processing, 96kHz sampling rate 24-Bit A/D, D/A converters Ultra wide frequency response: 20Hz - 40kHz Built-in drum machine with 40 rhythm variations Integrated chromatic tuner Sturdy metal chassis USB interface Bulit-in Expression Pedal Operates on 4 AA batteries, or the included AC power adapter Steinberg Cubase LE software bundled