Some months back I had a pulled IC/MPW .68 uf from another amp so I then added an old IC MPW .68uf in place of the gen 1 Sozo and I liked it, it was a bit more aggressive and had more clarity. So then I picked up some more newer .022uf IC MPW metallized polypropylene caps to swap for the 15 year old gen1 Sozo'z which were warm sounding maybe a little fuzzy but they sounded more plexi IMHO. I used older MPW's back in 2009 in a high gain 2203/SLO build and i used the MPW's and they were perfect for that amp but it was a bit less vintage more modern sounding.
So I swapped all the Sozo for MPW's yesterday and I initially liked what I heard, the amp had more clarity and was more aggressive but now it seems to have lost it's plexi warmth for more modern tight and aggressive response( Almost Cameron/SLO'sh). I'm going to give it some time before I yank them out but........................

I guess it's not fair the compare 15 year old burned in polyester coupling caps to brand new polypropylenes but I think I'm going to order some GEN 2 Synergy Royal Mustard caps(SOZO) and give them a whirl and see if I can get my beloved plexi tone back. I knew this possibility existed as having used them before but I wanted to try them out....... as the French say.........Cest La Vie...

