Built with the same brown sound-summoning controls for volume and drive with the addition of a three-band EQ for added capability in dialing in that perfect overdriven tone, the JHS Charlie Brown V4 expands the original overdrive into a full tone-shaping tool. Capable of taking any rig from classic rock mild gain overdrive to searing JTM half-stack heaven, this new and improved box of muscle may be square, but it's no blockhead.