What amp settings do you need for Pearl Jam?
It depends on the song. On a generic five-knob amp, Alive starts at Gain 6.5, Bass 6, Middle 5, Treble 6, Presence 5, Reverb 2; Yellow Ledbetter starts at Gain 2, Bass 5, Middle 5, Treble 6, Presence 5, Reverb 3. These are starting points, not the settings used on the records.
What gear did Pearl Jam use on these songs?
Alive: Black 1962 Japanese reissue Stratocaster (McCready); Marshall JCM800, 4x12 (Ten rig). Yellow Ledbetter: Not documented (McCready's Ten guitar was a Strat); Not documented (his Ten clean amp was a Bassman). Each song page lists the sources behind its rig.
Can you get the Pearl Jam 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.