Communitys JP6, Kemper, Mesa Mark 4 = Progressive! By ernieball.com - July 21, 2017 Share on Facebook Tweet on Twitter JP6, Kemper, Mesa Mark 4 = Progressive! Hey guys, check out my new vid, my 2004 JP6 still rocking! Kemper profiling amplifier, Mesa Boogie Mark 4 metal test Nick K profiles – YouTube read more Source: http://forums.ernieball.com Tags: amplifier, Ernie Ball, Ernie Ball Guitars RELATED ARTICLES The problem has been solved. After 15 Years I finally bought a JP 15 and it's in really bad shape…. LUKE 1 wiring question Question about Stingray guitar What's a good hardshell for a SR4? I have a question about my newly purchased guitar and would like to consult with everyone After 15 Years I finally bought a JP 15 and it's in really bad shape…. JPX Piezo saddle – loose contact or broken piezo element? After 15 Years I finally bought a JP 15 and it's in really bad shape….