Wren and Cuff The Tri Pie '70The Wren and Cuff Tri Pie 70_ is our version of the famous *** Muff triangle knob fuzz from around 1970. What weve done is made what we consider the best sounding tri knob replication you can find. Compared to the modern day BM, the Tri Pie 70_ has less saturation, a bit less mid scoop, and more snarl, while at the same time possessing a smoothness that sweetens things in a very musical way. Its range is more useful, responds well to your guitars