Winfield amps are made in Cochise, Arizona – that would have to be the coolest sounding place name in the universe. All hand-wired using circuit boards and Teflon wire.
Winfield amps have been produced since about 1998. Currently made in Arizona but formerly in Vermont.
Dating Winfield amps
The tube chart will have a date on it [Source: Winnie Thomas, email 13/7/2010]