Check the listing for details. Electro-Voice Evolve 70-90 Short Pole - Black. Condition: New. Listed at 109.00 USD. Premium, Portable, High-impact Sound Are you in need of high-impact sonic performance for large, high-energy events? Is portability a concern? The Electro-Voice Evolve series offers an effective, straightforward solution. This short pole mounts an Evolve 70–90 column loudspeaker on top of an Evolve 15- or 18-inch subwoofer. Here at Sweetwater, we’ve found that both the Evolve 70 and Evolve 90 column loudspeaker systems strike a perfect balance between high power, high output, and easy portability.