Are future improvements in Amp/PreAmps slowing to a crawl?

@roger_paul 
What if I could power my amp with fairy dust? Oh crap! This is reality and asking "what if..." doesn't make a thing possible. There isn't a 4th way to use them so now what? Just design irrational circuits that do nothing? You see these unlimited uses. Tell me what they are exactly. 
And who are you exactly to left handedly insult people as to the quality of what they've heard? I can't stand the kind of pompous arrogance some folks like you wield around here, preaching down to the unwashed masses as if you've beheld divinity and know better than all. 
I'd venture to guess that most of the folks here are listening a lot better than most of the world even knows is possible. I've hardly got the finest system money buys, but everyone I've dropped in the listening chair has never heard anything like it. You talk like if we could just build the perfect line stage and the perfect amp we'd here audio utopia. So... How's that perfect amp going to drive imperfect speakers? And how are those imperfect speakers going to interact with an imperfect room? We just need more active DSP? Answers, pal... Let's hear em. No more meaningless platitudes and condescending preaching. 

@decooney 
A friend showed me that case asking what I thought. It's actually smaller than my HiFi2000 4U case and I'm pushing that thing's limits to get 37wpc class A. I told him unless you're obsessed with the looks, get the bigger HiFi2000 chassis. 

Unfortunately amplifiers inherently shoot themselves in the foot. Too many large capacitors that produce phase shifts, too many big honking transformers that create large magnetic fields and vibration, too many capacitors and resistors that are placed arbitrarily without thought of directionality, fuses the same. Printed circuit boards that are strongly coupled (bolted) to the chassis and transformers that are bolted to the chassis. Give me a break! I got rid of my amplifiers last year. Or was it the year before? I also got rid of house AC and all the attendant issues thereof. I got rid of speaker cables and power cords and interconnects and digital cables. And fuses. And I don’t have to worry about room treatments since I’m strictly headphone oriented. I never looked back. Don’t look back, something might be gaining on you. 😬 If thy eye offend thee pluck it out. 👁

geoffkait, that's definately a different but interesting approach but how were you able to get rid of the house ac?

Nobody's gonna call TEO Audio out on his endless self promotion?   He can spell the line of bull crap like no other! Well maybe not no other, there is a rock selling salesman who is very accomplished at that as well. 
 Just to prevent some one from falling for his smooth lies I'll let you all know that I have tried his wire and his insanely expensive passive preamplifier  and neither one is anything special. 
 Trust me, it's not a reset of audio at the most basic level or whatever crap line he likes to throw out.