Purifi Class D: Junk?

From Nord Acoustics;

All Purifi 1ET400A are modular, PSU, AMP, and buffer. Making them easily upgradable in future developments of our Input Buffer. They are also easy and open to maintain.

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The REV D Buffer board uses modern versions of an old Op-Amp used primarily in Studio mastering and mixing equipment. Their development was focused solely on Audio performance and has been bought up to SOTA design and performance. Rev D will also accept the previous 8 pin Sparkos and Sonic Imagery Op Amps. Details of Op Amps Click

Regards

The one thing I did dig out of the thread is, I need to pick up a pair of Nord built Purifi 1ET400A, with Nord buffers and Sparco 2590. He'll give me a deal.

I own 9 of his NC500. I bought 5 from him. 3 pairs of MBs and one X3 NC500 with trigger and 3 x PS (no sharing). ALL use 1200/700 PS. All but 2 have rev. d boards (rev c). Let's say we have a rapport. 
My 3X was the first to roll off the line with rev d boards and multi Mono rail within a single enclosures, withOUT shared (or compromised) PS 1200/700. Serious piece of gear..

Now to modify the fuse circuit. It needs to be inline and remove the onboard 15 and add a 20 amp iec copper/silver non fuse female.

These are great sounding units with small planars MUCH better than any of the earlier 400/500/700. I really didn't like that sound as ALL.

The buffer made all the difference in the world for me.. BUT then I like tone control, Mcintosh and VMPS speakers. I'm one of "those guys".

To top it all off, kenjit, kicked me off his forum, I'm heart broken.. (took a while to work). Ok I all better now.. I'll quit yipin', I mean typing. :-)

Regards

The VTV input buffer board is pretty much the same as Nord’s. However, VTV offers more op amp options and the amps cost less

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Actually I did a visual side by side. The Nord is a much better made board, by no small margin either, NO copper foil resistors, and SLOPPY, solder joints. Second the Nord Rev. D has the greater options. You can not use the Sparco 2590s, or other pro op amp options.

Either buffer can use the smaller op amps, SI, or Sparco, a few of the Class A op amps..

The Wiess op amp is HUGE and has a proprietary mount, that only it can use. The cost of that buffer and opamp is the most expensive you can buy. The funny part the guy that sells the VTV boards admits the Nord with 2590s sound better and cost LESS. 1/3 less. 274.xx (Euro) 323.xx usd

He took back the VTV board, I got from him. I thought the option for Wiess was for TWO.
It is for one board 442.xx usd. Over 100.00 usd difference AND the guy that makes the VTV likes the Sparco better, ASK HIM... I think both use Sparco Voltage regulators. Nord does..

Regards

Ok I looked at my Nords and my phone pics. I deleted the pic of the boards after I returned them..

Now I remember the whole deal. I bought 2 buffer boards and 2 Wiess opamps. They arrived but it took 4 opamps to do 2 boards. It was worded weird. I looked the boards over, and he (whoever built the boards), didn't use copper foil resistors and the work on the boards was not as nice. Plane and simple. 

I didn't get to listen to the Weiss, as I recall. I was ticked that I need two more. 950.00 for a pair.. 700.00 for the Nords..

The boards side by side, LOL yea, about that... VW vs Porsche.
The boards I looked over..
Even Rev C had copper foil resistors vs Weiss with cheapos.

They can take the 2590s I was mistaken, I was ticked the it took 4 Wiess Op Amps and he sent me 1/2 what I needed. Didn't make any sense.

The guy couldn't read my mind.. Go figure.. My mistake..:-)

They were sent back. Customer service was great though.. No problems at all.. Good guy to deal with..

I'll stick with Nord.. only problem it's in England.. Turns out it's not an issue so far, 5 years now with class ds Hypex NC500, no issues..
Sure like them better than the ICE products.. I have Wyred4sound, too mercy.. Where is the tone control..

Regards

Do the NC500 buffers work on the Purifi modules? That would be nice for a guy like me to try. Just swap 2 amp modules. Cable swap maybe?

Just wondering?

Regards

JUNK? That’s kind harsh.. There are some good sounding class ds. NO they don’t float everyone's boat, but they get the job done for a lot of folks.. Is it my favorite amp? For some things, I think it is the absolute best.. I use 3 12k Behringer for SERIOUS bass duty.. I have 1300.00 invested. Come one come all, unless you have 4 of those things..:-) The best performance is 220 single phase. They can suck a PG&E pole dry, just like the rest of the welding machines can, too. Don't underestimate pro equipment EVER.. Couple of mods and some good cables. Can crumble a house...

It's how you got to hear it the first time. Live anyway..

NC500 I have a few, wonderful amp with buffer boards.. George has got them cooking along without, buffers. I didn’t like Ice or the Hypex 400 without buffers. Maybe he’s got something special there.

I use them in the hot summer months, with a tube front end. Valves in the cooler months..

Yea I don’t listen to junk. I never have. BUT then I like tone control, Mcintosh, Russco and VMPS speakers, too.

I like slower runnin' women too.. That's just me.. There is "too fast" ya know.. :-)

Regards

Thanks jaytor, I'll check it out. Got to be worth a listen..

Regards

Ok here is the part I don't get. HOW anyone can charge 7500.00 for any Class D or 20-40,000.00 for any class a or A/B. That is the my problem.. NO BODY is that good...

I can see a Rolls-Royce costing 1/4 million, I understand that. The back right side door is a lot more complicated than ANY SOTA amp EVER made. But please explain, why THEY get 200.00 an hour for building an amp in 48 hours and expect ME or anyone to pay for it.. NUTTSO comes to mind..

Jesus help me.. I helped build and repair dams, bridges, aircraft, buildings, rescue people from other countries, on a job in Brazil pulling guys out of fresh bores 1000 feet underground. 50.00 an hour? MAYBE.

God give me strength.. something is wrong.. Where is the Roller I been waiting for to show up on my door step with a big ol thankyou and a RED ribbon.. AND Buffy the belly dancer as the chauffeur.

She gives wonderful hand massages. :-)

Now everyone's point it? Some people like apple, some people like oranges. Me I like mangos.

Regards