Egnater TWEAKER 40 112 Guitar Combo Amplifier 40-Watt Tube 1 x 12 Open Back Combo, Custom Voiced Egnater Elite GH-50 by Celestion, Same Footprint as Tweaker-112X for Easy Stacking Bass, Middle & Treble Controls, AC, British or American Voicing Switch. Two Channels with Independent: Volume & Gain, o Tight & Bright Voice Switches, Vintage / Modern Amp Voicing Switch, Clean / Hot Gain Selector, Mid Cut Switch. Buffered Effects Loop with Level Selector, 2 Button Footswitch Included, Voi-Free Birch Plywood Construction. 117V/230V Voltage Selector.