Thanks for the replies guys!
A couple of things;
I am trying to kill two (or three) birds with one stone here;
1. Looking for a way to charge my iOS devices (iPhone & iPad) without having to turn on the PC to power up the existing USB port which with its 500mA output is a slow procedure in any case.
2. Doing away with the switch on thump from the amplifier.
When the arcade table is plugged in and turned on both the power supply & anything connected to it (amplifier in this instance) is powered on. The PC could be in sleep mode at this point.
Easy option; If I could source another mini-amplifier that had a 'soft-start' to prevent the switch-on thump and if the USB port on this new amplifier was capable of outputting enough current to charge - problem solved.
If this USB port were also capable of behaving as a digital audio input then all the better which would be all of the three things I mentioned above sorted in one fell swoop.
A big ask I know but a perfect solution.
If I could only achieve two of three things (minus the USB audio input) then not the end of the world and still a worthwhile solution as I could live without the audio input part of it which would be decidedly low-fi in any case.
I could of course wire in a dedicated USB charger but this is another, separate device and not as elegant a solution as having the amplifier achieve this. The fact that I am limited both for space & access does not help matters.
Another option would be to utilise the unused 5v output on the cabinet PSU but this is rated at 6A (and could increase to 8-9A) so not ideal to use as a charging circuit as the potential for causing damage if there was a short or other failure in the iOS device could be catastrophic for both device & table.
Again this could be overcome by fitting a fuse or breaker in the wiring from the PSU but as above not such an elegant, all-in-one solution as finding a new amplifier that could supply the 1-2A required for this purpose.
The search continues...
Thanks & kind regards,
-=Glyn=-