Audible Illusions modulus 3A, what would be the next level of up grade?


I have the Mod3A. simaudio 400m mono blocks, vpi scout II hyper model, ps audio gcph with level 1 underwood mods, tekton pendragon speakers
The classic line would be, it sounds great!
 I think me pre part of my system is where I should upgrade.
 Any suggestions?
scarbpaul12

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