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http://www.premierguitar.com PG's Joe Coffey is On Location in Petaluma, CA, where he tours the Mesa Boogie factory. In this video segment, we get to see the assembly process where the circuit board is checked and inserted into the chassis. In addition, we check out the implementation of transformers and tubes. The video concludes with the Mesa "hammer test" where technicians use the handle of a hammer to recreate drops and damage in the rock world.