Thorpy FX ER-2 Uni-Vibe Block 2Maker: Thorpy FX Model: ER 2 Uni Vibe Condition: New Description: When you design a pedal, it can take years to get it into production and because of the march of time you can be blindsided by a sudden obsolescence issue with parts. The ER 2 suffered this fate, in these circumstances you can either retire the pedal or you can take the opportunity to redesign and improve the pedal we opted for the latter. So, ER 2 Block 2 was born. Block 2 refers to