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Hi Changster, I fully understand your point. There is currently no high-end digital amplifier for car audio available. All top amps like Brax NOX, Eton Core, GZ Ultra,.... etc. are still analog heat plates. You would need a Powersupply, which generates dual rail voltages out for 12V. Connex...

I would reply to myself, An isolated DCDC converter to 15V should work. GND of DCDC will be set to -VS Input of DCDC is GND of powersupply, so it should be able to handle 60-70V at the input. Then the output is 15V higher than -VS independently of the real -VS voltage. And VDR is regulated. So...

Hello everybody is there now a clear understanding about that VDR voltage ? It seems to be 15V higher, than the lowest VSS negative Power. Does it need to be regulated (-> = is the quality of the voltage relevant for audio quality ) Where did you receive the 300A2 module ? Icepower.dk doesn't...