The Kerry King JCM800 2203KK is an all tube 100 watt head based on the 80’s JCM800. The amp features 4 KT88 power tubes, 3 ECC83 preamp tubes, 3 band EQ, gate, and Beast Boost. The Beast Boost is a switchable feature that can be adjusted by the assault and gate controls. Designed to boost the intensity of the amp and maintain control. The base tone of this amp is patterned after the reverse shape EQ setting used by Kerry. The control panel also features Jim Marshall and Kerry Kings signature. This amps simplicity and tone is great for all classic and modern Marshall players who want to be able to add a little more edge to their sound..