Guitar effects pedal, Dr.J D-58 Blademaster Distortion. A pedal for high-gain distortion, especially good for metal. The Blademaster features high, mid, and low frequency equalization controls, giving you a great deal of EQ control. The wow switch gives you a fat, thick bass tone. From 70s heavy metal to the most modern high-gain tones, this is the pedal you're looking for. Amazing tone and tonal control in a small enclosure. The True Bypass design preserves your guitar's tone when the pedal is not engaged.