NUX Optima Air is equipped with a pre-amp that allows you to enhance your sound by using a 3-band equalizer. Optima Air is loaded with 15 impulse response files. Each impulse response file optimized for the guitar type and the pickup type. The IR file names are included the guitar profile, optimized guitar type, and the pickup type. Press the IR footswitch to activate/deactivate the IR function. You can load 3rd party IRs and edit preset names through editor software. 24-bit, 48-kHz Sampling Quality 15 built-in acoustic guitar profiles with IR level control 9 Preset Slots Reverb: One Knob Reverb effect control. It adjusts the Dry/Wet and Decay parameters. Or you can turn it OFF by tweaking to 0 3-Band EQ: Gain, Bass, Middle and Treble controls Micro B USB Port for USB Audio Stream and Edit Software XLR DI Output: For direct connection to mixer (or PA system) Comes with Tonebird TB9V power supply with1500 mA output, Groovetech multi-tool, 2- 10' instrument cables. and 2 patch cables. UPC 850050658955 Style Modern Voltage 9 Volts Amperage 1.5 Amps Brand Name Tonebird Model Name Optima Air Manufacturer Tonebird Model Number NAI5-TBB Power Source Corded Electric Controls Type Knob Signal Format Analog Connector Type USB Item Type Name Guitar Effects Pedal Hardware Interface USB Audio Output Effects Reverb Warranty Description 1 year manufacturer. Manufacturer Part Number NAI5-TBB