2018 Peavey Invective. Misha Mansoor designed this amp along with Peavey. Half power switch, 9 volt onboard power outs, Master Boost, Noise gate. He had them put in high quality transformers that are clones of the original 5150. Clean is designed for a closed back cab and boost gives a Plexi flavour. Crunch and Lead are clones of his beloved Block Letter 5150 with a few tweaks. It sounds massive. BRUTAL METAL AMP but covers all genres of music Includes footswitch and cable. Very low hours in studio. Will ship.