Hoffman Amplifiers Tube Amplifier Forum
Other Stuff => Other Topics => Topic started by: DummyLoad on July 24, 2014, 09:44:11 pm
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cool mini-documentary on grado headphones.
click me (http://arstechnica.com/gadgets/2014/07/some-of-the-worlds-most-reknowned-headphones-built-in-a-brooklyn-townhouse/)
--pete