From the System sessions, Daron was an organic, guitar-into-amp kinda guy, with as little extra as possible. Les Paul and SG Gibsons were go-to guitars, and he started to use an Ibanez Iceman in the studio. The amps were mostly Marshalls, with the focus on the Marshall JCM800. Pretty standard equipment, really. Daron's explosive style of playing was what made the performances so special.
We recorded most of the guitars at Rick Rubin's home studio on his sweet little Neve 8068. I brought in racks of my own processing, and used my "Army Man' compressor on most of the guitars (that is my secret weapon!). I've drawn a diagram of the set-up: