[caption id="attachment_30456" align="aligncenter" width="501"] The 2017 Op-Amp Big Muff Pi is a faithful recreation of the original that features several practical enhancements.[/caption] The Electro-Harmonix Big Muff Pi pedals from the 1977–78 period can command big bucks. Compared to other models of the fuzz box, they weren’t made for a long time,…... Click for more