Grant, you(and some others)may not have fully grasped the situation. You could get a 1000 watt amplifier and still not get a single watt more power if the input voltage to the amplifier isn't high enough to bring some of that power capacity into play. This depends not on the maximum power capability of the amplifier, but rather on the gain that the pre-amplifier and then the amplifier section itself apply to the voltage coming in from the source material. It's possible that a 90 watt receiver would have higher gain than your 100 watt and be louder with the volume at max, and it's also possible that a 200 watt receiver might have lower gain and wouldn't even be as loud.
The point is that you simply can't buy a unit with a higher maximum power output rating(neither the 3808 which you mention or any other)and be guaranteed the ability to play the lower output level sources which you mention at a higher listening level. You either have to have the gain specs of your present unit to compare with the gain specs of a possible replacement, or you'd have to actually try another unit to see if it would play your source materials more loudly. I know that you're looking for a relatively simple answer, but none is available, since maximum power capacity obviously isn't the problem.
