Re: name that amp.. Nels Cline: amp du jour
The good news is, Nels is one of those guys that Guitar Player watches closely (Him, and John 5. Go figure.) So, pretty much everything Nels does is the subject of a indepth article or lengthy review. Within the last few months, there was one issue that had an interview about the new Wilco album, AND a review of the the new Nels Cline Singers CD. I don't recall reading anything about a red amplifier, but they do talk quite a bit about his gear.
A couple years ago, I remember him mentioning a JTM45 that belonged to Jeff Tweedy that he was using and loving. That red amp looks to be along the same lines, but definitely not a true Marshall. Park, maybe?