As a fellow CAL Ikon MK II owner, I say send your unit back to CAL for the Power Boss upgrade. I bought my unit with the Power Boss, and it rocks in the bass dept. Everything I've read places the Ikon MK II P.B. as one of the best one-box players out there for deep bass performance. Plus, it should only cost you a couple hundred bucks for the upgrade. Incidently, the Power Boss adds over 4 farads of capacitor voltage storage, which should produce a noticable difference in bass performance over the unit you currently have. Best of luck!
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