Eden Electronics was founded in 1976 by David Eden in Eden Prairie, Minnesota, USA as a custom builder for professional artists and manufacturers. Eden specialises in bass amplification.
Dating Eden amplifiers by serial number
“For US Made Eden amplifiers, the first four digits of your serial number represent the year and month (in that order) of manufacture. For example, an amplifier with the serial number0408A1234 was built in August, 2004. For pre-USM amps, they are simply coded with the date”
Eden amp catalogs