On 09 Mar 2004, "DaveDrummer"
wrote in :

But if you listen to the Immigrant song solo for example, the
guitar sounds spaced. Almost as if there was a mic near the stage
and another one a few hundred feet back, but they're panned apart
and the imagine is excellent.

I noticed that, too, and I'm also curious about how it was done. I
assumed it was creative application of delays and stuff during the
recent production of the source, rather than having been done at the
time of the recording. It sounds at times like the guitar was
reamped (for real or digitally) and the second guitar given quite a
different tone and both copies panned hard to each side. The effect
comes and goes at strategic times. It doesn't sound natural, but
sure sounds good.