The 2004 and the 4004 were never sold as a "Series 2". There was an original version of each; and a Mark II version of each.
Better look closely at that "Series 2"; my guess is that there'll be a tag on the back that says "Mark II".
In the meantime, copy 'n' paste this into a browser window...
http://reviews.ebay.com/Classic-Aragon-Amps-A-primer_W0QQugidZ10000000001149810
Better look closely at that "Series 2"; my guess is that there'll be a tag on the back that says "Mark II".
In the meantime, copy 'n' paste this into a browser window...
http://reviews.ebay.com/Classic-Aragon-Amps-A-primer_W0QQugidZ10000000001149810