Also, I have been thinking about doing a revised layout for this amp, but adding some things such as Kevin's protector board, and possibly adapting the circuit used by nwavguy in the o2 for battery management to delay startup until the 2 Meanwell bricks had both come up, since this is what is causing the large DC offsets at startup (and possibly at shutdown as well). I know the protect board would take care of the startup issue so might be overkill for the additional circuit. The board would have to be larger in size to accommodate these changes, which should also have some benefits thermally. Large heatsinks for both the Amb regs and the onboard regs would also be a good idea.
This is just at concept phase right now, and I'm not really interested in on for myself, but might do it anyway. If so, I will ask Kevin for permission to use his protect board circuitry for this.