Feb 15, 2013 · dsi mono evolver vs poly evolver. 4th June 2008. # 1. BryanHyde 🎙️. Here for the gear. 🎧 10 years. dsi mono evolver vs poly evolver. are the only differences between the mek and pek the fact that the pek is like having 4 mono evolvers, surely theres got to be more going for it? i have a chance to get a new poly evolver for about 1200 ...