Another point i also notice. Not all 12dc car battey are the same, i strongly recommend Odyssey battery at least 80-175ah. Even the new technology Lithium or even the lithium polymer, the sounds has no dynamics. In audio, i strongly prefer just lead acid or Agm ( glass mat).
Dc for power supply
Anyone use 12v or 24v car battery as dc power supply for home audio. Or even for filament on tubes. I like to know if any members try different types of battery. Lithium, Lead Acid, NiMH, Agm, Gel etc... Can you tell me if it makes a huge differences on each type of battery. I like to use it to run my dc filament on a cd player. Please advise??