The Peavey MAX 150 bass combo amp delivers huge bass tone with exclusive Peavey designs, including unique psycho-acoustic low-end enhancement that adds bass without demanding anything extra from the speaker--a testament to Peavey's technology-driven reliability. The EQ section includes three-band EQ, a gain boost featuring Peavey's patented TransTube® tube emulation circuitry, and switchable presets like Contour, Mid-Shift and Bright.