MXR 78 distortion. As the name implies this pedal nails all of those dirty, distorted 70's sounds. From Ramones to Judas Priest and everything in between. : r/guitarpedals
MXR Custom Badass '78 Distortion - YouTube
MXR® SUPER BADASS® DISTORTION - Dunlop
MXR M78 Custom Badass '78 Distortion | Reverb
Custom Badass '78 Distortion - MXR - Max Guitar – Max Guitar