Hartke AGX Attack - Acoustic Pedal The Hartke AGX Acoustic Attack Pedal gives the acoustic guitar player the ability to dial in an acoustic tone that actually sounds acoustic while playing through an amplifier or PA system. The AGX emulates a tube/microphone preamp with a 3-band bass, treble and sweepable parametric mid EQ section, making it a must have tool for acoustic studio and stage performers. Features: AGX Tone Shaping Pre-Amp / direct box Tube/Microphone Pre-Amp Emulation 3-band Bass, Treble and sweepable Parametric Mid Mix Control blends effected and dry signal output Gold Plated XLR direct output Extruded Aluminum Stomp-box construction