Let's say you've got a hotrod with a high performance engine. Maybe this engine has an old school fuel delivery system. Maybe you'd like to update the fuel delivery system with some new technology. You cannot expect maximum performance by simply removing the old fuel system and installing the new one. You're going to have to put in some time and make some adjustments to the rest of the system to realize the fullest potential of the new technology. What those adjustments will be are going to be determined by the rest of the rig and of course your own personal needs and preferences.
Those of us that have switched to Class-D amps and have put in the time and made the adjustments to the rest of the system are being rewarded accordingly.
Like many others who have responded, my rig has never sounded better or performed more efficiently than it does now with the Class-D amps.
I've had a lot of different gear and regardless of how good any of that previous gear was, none of it has delivered the goods like the goods are being delivered now. I've experienced absolutely no downside whatsoever by making the change to Class-D...only positive.
These amps take up substantially less space, they use a lot less power (my power bill went down $14.00 a month simply by changing to these amps), and they put out virtually no heat.
At the same time they have over twice the power output of my previous room heaters, and they are more neutral, more dynamic with better detail, faster and they have more body. I'm sure I could list other attributes but you get the idea.
Regardless of the item or the topic, there will always be those that cannot or will not accept that something new or different could possibly be better. Is it going to be better for everybody...probably not. But that doesn't mean it can't be better for those willing to give it an adequate chance.
I for one could not be happier that I made the change and put forth the time and effort to optimize that change. I will not be switching back and I think as this technology becomes more refined we're going to see a lot of others making the switch as well.
This has really been an interesting and enjoyable thread and one that I am following closely. I'm glad to see so many responses and equally glad to see that I don't stand alone in the Class-D camp.
Keep it fun everybody and enjoy the music. I know I am!