Heartland

I am aware this is a rather niche question but if anyone knows they're probably on here. So I really like the 1998 guitar tone, which is especially noticeable on FALAA and Summer. But for the 1999 tour it sounds noticeably different and would continue to do so despite being pretty much the same people in the band. So I'm wondering if anyone knows what they changed. I'm assuming its probably just different gear but it does sound a lot different.

I have dozens of guitar presets that follow the sisters sounds.

1996-1999 are the only years where we can clearly hear an octaver pedal, you can very easily hear it on Logic's intro from that era.