From Wikipedia, the free encyclopedia

Sunn Amplifiers
IndustryMusical instrument amplification
Founded1965, Tualatin, Oregon, US
Defunct2002; 21 years ago (2002)
United States
Key people
Conrad Sundholm
Norm Sundholm
ProductsInstrument amplifiers

Sunn (stylized in all lowercase) amplifiers was a brand of musical instrument amplifiers based in Tualatin, Oregon, United States.


In early 1963, the Kingsmen, a band based in Portland, Oregon, became known for their hit version of the song "Louie, Louie". After its hit single, the band soon embarked on a 50-state national tour.[citation needed] Because the band was used to playing small hops and school dances, many of the members found themselves ill-equipped with the amplifiers that they were currently using. Bassist Norm Sundholm discovered that his bass amp was not nearly powerful enough to play larger concert halls.[citation needed] Sundholm enlisted the help of his brother Conrad to help solve his problem. By 1964, the Sundholm brothers had designed a high-powered concert bass amplifier.[citation needed] The early Sunn amplifiers relied heavily on tube amplifiers designed by David Hafler and preamps sold by the Dynaco Hi-fi company, with many of the first units actually containing power amplifier chassis sold by Dynaco (models MKII, MKIII, MKIV) as well as modified Dyna PAS1 preamplifiers. By 1965, the demand for Sundholm's amplifiers had increased to the point where the family garage could no longer be used as the manufacturing facility. At this point the Sunn amplifiers still relied on the Dyna power amp circuitry, reworked to fit Sunn's own chassis but still employing Dyna produced and branded transformers and the same electronic design. Thus, the Sunn Musical Equipment Company was founded.[citation needed] Throughout the original Sunn Amplifier line they employed Dynaco designed and built transformers (up to the 120 watt MK VI transformer set) and Hafler based power amp designs until Sunn stopped producing the original line of tube amplifiers in favor of the solid-state Concert and Coliseum models. Later Sunn produced the electronically unrelated Model T tube amps.

Fender acquired Sunn in 1985, relocating operations from Tualatin to Lake Oswego.[citation needed] The stated intent was to both revitalize the Sunn amplifier lines and to produce some Fender-branded models as well, which included the Standard Series (Princeton Chorus and Ultra/Ultimate Chorus, both solid-state) and M-80 Series, and are identified as USA-made amplifiers with an "LO"-prefix serial number.[citation needed]

Fender shut down the sunn operation in 2002.[citation needed]

The band Sunn O))) was named after the company (to the point of including a typographic representation of the logo, albeit with one too few parentheses).

External links[edit]