Any guitarist with an array of pedals most likely has one from Electro-Harmonix. The Long Island City-based company (represent!) allowed Boing Boing’s Joel Johnson in for a video tour of the factory and the results are a spectacle to behold. Did you know that Electro-Harmonix is the largest manufacturer of vacuum tubes in the world? Neither did I. Check it out and see if you can spot any pedals you may have heard of.