Class D amps seem poised to take over. Then what?

As far as the above mentioned stock IceEdge amps from Legacy.......you can buy a dual mono amp with the same stock modules delivered from Rouge Audio to your door for less than $1600.....same thing, way less money.  I can then do a mod on the amp that will transform it for $600.....

As far as Purifi.....it depends on the skill of the implementor.  Check out 10 audio.....they reviewed the $2000 Purifi based NAD C298 and only gave it 6 out of 10......he just reviewed my modified VTV Purifi amp ($1700 total for amp and mod) and gave it a 9.5....and sometimes bordering on 10.  There is as much variance in class D as there is in class A/B or tubes.  It is all about the skill of the designer.

 http://www.10audio.com/evs-vtv.htm

There are plenty of new class D amps coming out too (almost all GaN based).  The $3K GaN based amp from LSA, the $3K GaN amp from Wyred for Sound, the $6K GaN based amp coming from Mytek, the already released $700 GaN amp from Premium Audio and the latest $2500 GaN amp from Orchard.  And for serious money the 500 watt GaN mono blocks from Mytek ($20K the pair).  Fun times ahead.

"Since two weeks I own a Boulder 1160 Amp. It replaced a pair of Nuprime Reference 20. The Nuprimes were heavily modified. Duelund silver Bypass Caps, Neotech UP OCC silver internal wiring, pure silver power wiring, WBT nextgen silver binding posts and rca, synergistic orange fuses...
I also heard the new Nuprime Evos in my system. Nuprime are great amps but - the Boulder destroys them. It is so much more revealing, has tons more resolution, is as musical but less coloring, has better Control. The Boulder is my last amp. Main negative point is that it produces a lot of heat but I have to live with that."

I don’t see the relevance here. You have a discontinued modded $7600 amp and you are comparing to a brand new $27,000 amp. I would hope the more expensive amp is better. What if you had done the same mods to the $8000 Nuprime Reference? I bet it would be better but still not in the league with the Boulder. Nuprime, I believe, uses two ferrite core inductors in series with the output signal. One is bad enough....but two? I asked Nuprime a couple of years ago if they were working on a GaN based amp and they said they were and that they were ahead of the curve......well, not a peep from them since. Meanwhile, you have a ton of GaN based amps due to arrive any minute, including the $20K 500 watt mono blocks from Mytek.....(suppose to be shipping in July). Now that would be a good A/B with the Boulder. What if Boulder took its super input stages and combined it with a GaN based class D output stage. Then their amps would be far cheaper (way less heavy) and I bet would still sound just as good. Of course, they are not going to do this because it would piss off all the old customers who paid more for back breaking boxes (but someone else will). Class D is more complicated than class A/B so EVERYTHING has to be done right.  You cannot just throw a bunch of cheap op amp inside and think you have something good. 

The class D revolution is just starting.....within a few years those 100lb class A/B amps will all be boat anchors....he he.

Children......go to your room until you know how to play.  So much ego, so little agape.

Everyone has the ability to choose love at any time.....and every second even.  Please choose to only share when you have something that contributes to the advancement of audio and the soul.  Every word you think, say and write affects every single person on the planet.  That is how powerful we are.  May all be blessed....may all find the love and joy that is always present.

The Merrill amps double power to 2 ohms.....who cares? about one ohm except for those that have overpriced big speakers that only the 1% can afford?  You really need to try the Lii drivers on an open baffle.  You can use 10 watts and play way over 100db.  Those Wilson's etc. are boat anchors.  You buy a $100K speaker and you have to buy a $40K amplifier to run them....crazy.  A pair of 99db Lii 10 inch full range drivers are $1300 a pair delivered.  Make an open baffle with wings and you have flat to 40hz bass.....and then in a few months (after you have picked your jaw off the floor) you add a supertweeter....then later add some woofs....and you have better sound than a Wilson big heavy boat anchor.

Grannyring,
I am 100% sure it will sound different. Every single thing you do changes the sound including jacks, wire, solder, chassis vibrations, etc. But, yes, they are using the exact same modules (except that Rouge is using mono modules and Legacy is using one half of a stereo module (exactly the same thing). Yes, you can see pics of the inside of the Legacy amp that verify this fact. Legacy are not doing anything to the modules....they do not touch them......it is quite clear from the pics. They do have a separate ground wire running from each module and they do scrap away the anodizing where they ground (standard practices). Basically, they are stock IceEdge modules in a box.....same as Rouge Audio. What I am 100 % sure of is that with my mods either amp will sound way, way better.....but still slightly different from each other.

https://systems.audiogon.com/systems/5078
Pic #11 shows the best interior shot. Click on the pic again to make it larger.....you can clearly see the amp channel on the top of each module is not hooked up in any way.  Totally stock stereo modules using just one channel for more power and better separation (same as using mono modules).

George,
Wrong, many class D amps are fine with 2 ohms (stable and otherwise) and one of my customers is driving 2.4 ohm Thiel 3.7s ......Fremer drove his 1.4 ohm Wilson Alexx with the IceEdge module without a hitch. Time to tell the truth, dude! Yes, some class D amps are not designed with big enough power supplies to drive 2 ohms or less. After all, how many speakers go down to 2 ohms or less.....mostly the big expensive ones that only the 1% can afford and with 97+db speakers like the incredible sounding Lii Audio drivers.....those big expensive boxes are now boat anchors.

All implementations of the Purifi module sound different.  Some OK and some very good and some very, very good.  Here is another take on a $1650 version.....reviewed with Magico speakers:

http://www.10audio.com/evs-vtv.htm

You rang?
Yes, I am still here. So is infinite eternal bliss and love. Please tune into the love and bliss as much as possible for the sake of all humanity and yourself. Every single moment is a miracle beyond your wildest imagination. You have 60 trillion cells dancing in your body. Thank you for giving me an opportunity to speak the truth about our magnificence. 

BTW.....the person was pointing his irritation at someone else.......please do a search.....most of us know who "the person" is....from down under.