|Birth name||Mike Kaufmann|
April 19, 1966 ,|
|Genres||Thrash Metal, Speed Metal, Heavy metal, Groove Metal, Nu Metal|
|Years active||1985 - present|
|Labels||Candlelight Records, Roadrunner Records|
|Associated acts||Defiance, Under, Inner Threshold|
|Ibanez Pro-line, Traben Array|
Mike Kaufmann (born Michael Kaufmann, in Oakland, California on April 19, 1966) is an American heavy metal bass guitarist. He is best known as the bass player for the thrash metal band Defiance. Starting the band in 1985 with friends Matt Vander Ende and Brad Bowers, he quickly became a key reason for the bands success, co-writing much of their material, and playing on all four of their LP's, Product of Society, Void Terra Firma, Beyond Recognition and The Prophecy.
He also handled most of the bands business affairs and was responsible for getting the bands first shows supporting such acts as Testament (then Legacy) and Lääz Rockit which resulted in label interest. He co-produced and funded the recording of the Hypothermia demo which caught the attention of Monte Conner and Roadrunner Records and landed them a record deal. He is the only member of Defiance who has been with the band from its beginning.
After Defiance disbanded in 1993, he played bass in Inner Threshold and later formed the band Under with long-time friend and Defiance band mate Doug Harrington. Under thrived in the Bay Area music scene over the next five years playing shows supporting bands such as Machine Head, Exodus, Sevendust, and many more. Under was on the verge of signing a record deal when they broke up because of personal and musical differences.
In 2005 Defiance reunited, and along with Steev Esquivel, Jim Adams, and Doug Harrington began work on the fourth studio album. Following Harrington's passing in 2006, the band moved on to finish the album without him as he had requested.
Kaufmann works at a law firm in San Francisco, is married, and has one daughter.