I have a working Amp 4 powered by a laptop power supply 19V 4.7A. I left out the D99 Rectifier and did not install the Large Caps C1000 C1001. After 20-30 hours of use one channel started delaying start up for a few seconds. So after the on/off switch unmutes I get a "pop" out of one speaker and it starts to play and then 3-10 seconds later the other speaker "pops" and it starts to play.
Any ideas on how to correct this minor issue? Or is it just a problem with the power supply being below the 20V minimum?