VOX V8 Hi-gain distortion

As befits the name "V-type 8-cylinder," this is a high-gain distortion unit that boasts an awe-inspiring tone. In addition to distortion sounds that are ideal for heavy riffs or soloing, you can also obtain cutting high-gain lead sounds. It provides a mid-shift switch that lets you change the band where the mid-range peaks.

Turning this off gives you a broad range with an emphasized attack. Turning it on will shift the band to be more suitable for lead playing