Get the tone
Satriani has been a long time Ibanez player, with several signature models. With Chickenfoot he favours a 24 fret signature model with Floyd Rose, so a modern guitar with a bridge humbucker and locking vibrato will be best, although most instruments can be used here. There is quite a lot of gain, and while, too, and while Satch has previously played Peavey amps, he has recently returned to Marshall for his classic rock tones. You’ll need a fair bit of gain, so aim for a smooth drive tone with a spash of delay/reverb.