The Wren and Cuff Tri Pie 70′ is version of the famous Muff “triangle knob” fuzz from around 1970. What they’ve done is made whatthey 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. It’s range is more useful, responds well to your guitar’s volume knob, and even gets into the overdrive zone at lower settings.
If you like the current EH muffs, but have found them to be harsh and brittle at times, or much more “buzzy” than you expected, then the Tri-Pie 70’ may be for you.