What amp settings do you need for Korn?
On a generic five-knob amp, Blind and Freak on a Leash both start at Gain 7, Bass 4, Middle 5, Treble 6, Presence 5, Reverb 2: a starting point follows the style of the part, and these share one. These are starting points, not the settings used on the records.
What gear did Korn use on these songs?
Blind: Ibanez Universe seven-strings (Munky and Head); Not documented (kept secret, per Guitar World). Freak on a Leash: Ibanez seven-strings, the band's guitars of the era (not placed on this song); Mesa/Boogie Triple Rectifiers, the band's early recording amps (not placed on this song). Each song page lists the sources behind its rig.
Can you get the Korn tone without the original gear?
Yes. What carries these sounds is the gain structure, the EQ curve, the pickup position and the order of the effects, and all four can be rebuilt on other equipment. Tonelify rewrites each starting point for the amp and guitar you own.