This is a "Pre-Owned" Shadow Amplification MK40 in excellent condition.The MK40 is a variable-voltage 40 watt class A/B amp fueled by a quad set of EL84 power tubes. The "Vox" like cleans on this amp are super nice. Crank this baby and you'll get close to Plexi territory.
This amp has a wattage control feature located on the front. This knob allows you to scale the power output of the amp anywhere between 1 to 40 watts. This enables you to set the saturation and feel of the amp without blowing out your neighbors or your audience at small clubs. The wattage control circuit is designed to keep the amp in bias and the tone consistent through the full range of 1 to 40 watts. The front end of the amp is designed to be simple but very pedal friendly. There are controls on the front for Volume, Tone and Wattage. In addition, there is bright switch for dark sounding guitars.
The output transformer will accommodate an 8 or 16 ohm cabinet.
This amp is in great condition. It was well taken care of and has seen light use. Our amp tech has gone over it and given it a clean bill of health. There are no major cosmetic flaws. I would rate it a 9/10.