Perfect for managing your acoustic guitar signal on stage, the Radial AC-Driver is an instrument preamp and DI box that boasts outputs to both the PA and your stage amplifier.Its intuitive controls allow you to quickly shape your acoustic instrument to sound just as natural amplified as it does unplugged. An adjustable low cut filter removes excess low boomy tones, and a 180° polarity switch is key to correcting potential feedback problems. The variable notch switch also helps cut back on troublesome frequencies. Both the unbalanced 1/4" output and the balanced XLR direct output feature level control, and a ground lift prevents ground loops over the XLR line. Finally, the latching mute switch allows you to silently switch instruments or quietly tune via the tuner output.All of these tools are easy to use and fit in a compact stompbox. Perfect for any performing acoustic guitarist, the AC-Driver is the right choice!FeaturesStudio quality preamp and class-A buffer circuitBalanced DI output to feed a PA or powered speakerMute footswitch for instrument changeoversNotch filter and phase switch to reduce feedbackSpecificationsAudio Circuit Type: Class-A FETDynamic Range: +107 dBuNoise: -97 dBuFeatures: 180° polarity reverse, Ground lift, Level ControlInput Connectors: 1/4"Input Impedance: 10 MΩMaximum Input: +10 dBuOutput Connectors: 1/4", XLROutput Impedance: 4.4 kΩConstruction: 14-gauge steel chassisSize (H x W x D): 1.75" x 3.75" x 4.75" (4.5 x 9.5 x 12.06cm)Weight: 1.4 lbs (0.63 kg)Power: 40mA, 9VDC (center pin negative)Conditions: For use in dry locations only between 5°C and 40°C Radial Engineering AC Driver Instrument Pre-Amp with Direct Box.