@
ft_sjo
As stated, I'm in the planning phase and definitely appreciate the input.
What do you think about using a ColdAmp CPS80 DC-DC Supply. It generates +/- 60 Volts with 800W continuous power. There's also plenty of car-specific protection circuitry.
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Similarly, there is a slightly less expensive (and more local) option from Class D Audio. Their product produces +/- 50 Volts with 500 W continuous power.
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With 800 W on tap, there are alot of options for DIY amps. I will be back once I have something worthwhile to post. Lots of chip amps and kits to consider that may have better characteristics than the AMP9 and AMP32.