About three years ago, I had an amp that I think had ultimate tone. I then got burned out on playing in bands, moved to hawaii to surf for a couple years ... eventually came back and put together a new rig. I've put together a rig that sounds really good ... but not quite as good as the old one. Which factors do y'all think are contributing most to the difference. Old Rig: Ampeg SVP-Pro Eden WT-1000 bridged Eden D-115XLT 8 ohm Eden D-210XLT 8 ohm Terra Labs power cables New Rig: Ampeg SVP-Pro QSC PLX1602, 30hz filter and clip limiter engaged, stero Aguilar GS410 4 ohm Aguilar GS212 4 ohm OR SWR Big Ben 8 ohm. "Normal" speakon power cables The new one sounds good, but is just missing some of the magic the old one had. A little less thickness, a little less punch and depth. Not as coherent of a sound, occasionally slightly harsh, a little over-scooped. I think its a sum of a few of the factors in the poll. Lets see what you think.