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Batteries & Capacitance

I currently use & have compared 55AH Optima Yellow Top and 100AH Enersys Odyssey, powering a Sony SCD-1, a Merlin BBAM, and now the AC-1. To my knowledge both are SLA batteries. Both are deep-cycle types with very thin, dense plate structures. The YT uses spiral plates. Both have low impedance in the 2-3 millohm range-- orders of magnitude less internal resistance than small SLA batteries & standard automotive types. But even so, in high-end audio applications both batteries audibly benefit from adding lots of additional capacitance between the terminals and near the load.

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