The original Evolution® Bridge Model did exactly what Steve Vai wanted it to do: kick butt and produce serious scream. Then he wanted something a little more complex ? the same basic tone with increased headroom and dynamics, so that the sound kills on 10 and cleans up when the volume is rolled down. With a little less power than the original Evolution®, Evo 2? balances perfectly with the Evolution® Neck Model and performs equally well with high gain and vintage amps.nn Specs : n ? Wiring: 4 Conductor n ? Magnet: Ceramic n ? Output mV: 375 n ? DC Resistance: 14.02 Kohm n ? Year of Introduction: 2004 n ? Patent: 4,501,185 & 5,908,998n ? Wider pole piece spacing for guitars with string spacing at the bridge of 2.1″ (53 mm) or greater.nn Recommended For : n Bridge position in solid body guitars.nn Tech Talk : n Although Steve was happy with the basic sound of the original Evolution® bridge pickup, he felt that a pickup with similar tone and less output would be useful ? particularly for live performances. He also requested the frequency response in the 4000Hz to 5000Hz range to be reduced slightly compared to the original Evolution® Bridge Model. The Evo 2? accomplishes these tasks by using a less powerful magnet to reduce the pickup?s power, and patented Virtual Vintage® technology to alter the frequency response without drastically changing the overall tone. The Virtual Vintage® technology also allows the Evo 2? to produce a very good single-coil sound when switched to split mode.