Friends I was asking about a regulated power supply for the Tripath amp (AMP6) and tested it with a power suply using a Toroid, 18V 4A regulated with a LM338K variable regulator (5A max).It worked fine. At first I tested with a LM317 but it did not work [xx(](it was supposed to work, however, people here in the Forum say the amps need regulators that works from less than 1A or less). I think that the LM338K is very appropriate for the amps. But check the amps of the ones you need and the voltages. LM338K can give 5A but does not works on more than 32 or aproximate volts.
I am happy at the way my amplifier sounds.
If you are interested in making one power supply see the information at National Semiconductor, or ask me if you want me to draw a schematic to post here. I cannot guarantee you anything, but at least I am having a AMP6 working.