The VOX AC30VR Valve Reactor combo amp uses an "old-school" split-panel design, the AC30VR offers 2 distinct channelsNormal and Overdrivewith the Overdrive channel adding a separate Gain knob. In addition, the VOX amp's overdrive Style button delivers 2 distinctive flavors.Equipped with 2 custom-designed 12" Celestion speakers, the VOX AC30VR combo delivers a roaring 30W of power. The Normal channel offers both Bass and Treble tone controls, along with a single Volume knob. A Gain knob has been added to the Overdrive channel, as well as a Middle control for more defined tone shaping. In the Master section, the AC30VR features a unique Tone Cut circuit knob for dampening the high-end frequencies. Master Reverb and Master Volume controls are also provided.The VOX AC30VR amplifier's back panel is equipped with an external speaker jack for use with an 8 Ohm extension cabinet. Using an extension cabinet will mute the internal speaker.