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HYPEX,PASCAL OR ABLETEC

Knowing about the many apparently very good class D amps on the market right now and even though I'm very satisfied with my current ClassD Audio SDS-440CS amp, I'm seriously considering purchasing one of these amps to try out in my system. My thinking is that, if I do like the amp in my system, I can just use my current amp to replace an older Adcom GFA-545 that currently powers my Magnepan CC3 center channel and my unamplified (passive)sub for ht purposes. I would then always be able to choose which amp I used for my 2 ch music and which amp I used for ht(cc and sub).

Well, I should get to my point:

I'm using an Oppo105 as the master source in my streamlined A/V living room system used 40% for 2-ch music and 60% for ht. For 2-ch listening, I stream my cd collection and hi-res Flac files from a Synology NAS in another room to the Oppo. The Oppo acts as a stand alone dac and sends the analog output via xlr cables to my class D amp (440 w/ch@4ohms) which powers my Magnepan 2.7qr speakers. For ht, I use the Oppo for decoding surround sound from Netflix, Directv and bluray discs. Two class A/B amps power the Oppo's ht audio outputs to my Magnepan CC3 center channel, LFE sub and in-ceiling rear surround channels.
I've narrowed my new amp choices down to the following four listed below. I'm requesting feedback on any or all of these 4 amp options, especially from anyone who has used 1 or more in their system. My budget is $2,000 to $2,500 and my room is 18ft x 13ft with 8ft ceilings. Here are my options:

Option#1 Hypex Ncore nc400 based amp builds from James Romeyn in Utah. A stereo, dual-mono build is $1,500 total and is rated at 400 watts @ 4 ohms. It includes 2 Hypex nc400 power modules both powered by 1 nc12000 smps mounted in a generic case with a black or silver aluminum faceplate with both se and xlr inputs. A pair of mono-blocks built runs a bit under $2,000/pr. total and consists of a nc400 power module mated to a nc600 smps in each 'NCORE' labeled black case with both se and xlr inputs.

Option#2 Pascal amp build from Aluminati Sound in Ohio. This is a stereo build only that will use a new stereo board from Pascal in Denmark, called the SPRO-2, that has a smps incorporated on the board. Power output is rated at 500 watts/ch @ 4 ohms. Forecasted price is about $2,000 but may run a bit higher. Pascal modules are used in the new JRRG Continuum 2 integrated amp that has received very positive sq reviews. Alumnati is owned by 2 former CNC machinists/fabricators. Their main advantage is their case work. One of the Aluminati owners, Matt Kraemer, told me the new stereo Pascal amp is tentatively named the "X-1" and should be available for order by approx. mid July. He said the stereo case will be milled from a single large aluminum block. The finished case will have an anodized finish (think JRRG cases but milled as 1 solid piece instead of multiple anodized face panels attached to a chassis underneath. The aluminum case will have a blue power/status light mounted underneath projecting downward.

Option#3- Abletec amp modules in the DSonic M3-600M mono-blocks. I'm not certain which Abletec modules are used in these amps but the price is $1,950/pr. and power output is 600 watts/ch @ 4 ohms in black cases with a blue power/status light with both se and xlr inputs. The Abletec modules have built-in smps just like the Pascal modules. According to DSonic's owner, Dennis Deacon, the 600Ms and their top-of-the-line 1500Ms have similar sound characteristics, even though the 1500Ms use Pascal modules(likely either a MPro or XPro module).

Option#4- Identical ClassD Audio SDS-440CS amp to replace my older class A/B amp that powers my center ch and sub. This option is least attractive to me since it would mean my music amplification would remain the same and I wouldn't be auditioning any of the newer class D amp modules. If I liked option 1,2 or 3 above better for music playback, I would simply move my existing CDA music amp over to center and sub duties anyways. The only benefit of option #4 is that it's the least expensive at $630.

I've ruled out some amps, like the Wyred4Sound and Red Dragon offerings, because they use the older Ice ucd power modules typically considered sonically inferior to the newer Hypex Ncore, Pascal and Abletec power modules. Any comments comparing the sq of these options is greatly appreciated, especially if you've owned or listened to some of these. I do understand that there is more involved with how various class D amps sound than just the power modules utilized, such as high quality components and custom input stages.

I should also say, just like Audiozen, I have never actually heard a Hypex, Pascal or Abletec powered amp. I'm just curious and base my optimism on the positive reports from owners, listeners and professional reviewers. If I had a larger $10k plus budget, I'd likely just buy a completed amp based on the Hypex Ncore nc1200 power modules, such as Merrill, upcoming Mola-Mola or Acoustic Imagery.

Thank you in advance for your thoughts, comments and suggestions. Please feel free to suggest other reasonably priced class D amps I may have omitted.

Thank you,
Tim



Much like Audiozen, I am basing
noble100
sebollo001
39 posts
 
Yes Kuribo, I assume you're smart enough to understand the context of all the information provided in this forum.
In any case, this professional sound engineer tested both NC400 and Anaview amplifiers with the very low efficiency Amphion One 18, and he clearly preferred the Anaview AMS technology.
It is clear that no one will be able to test or compare both amplifiers with every speaker in the world ever made, is that what you are expecting? jeje
I just posted this information for everyone to have a better knowledge of the latest developments of class D amplifiers.
You should understand that very possibly, one module will perform better with some speakers and certain playback chain, while it may not have the same performance if you change something.
You like to speak in absolute terms, and also ask questions that seem to oversimplify the comparisons between modules.

kuribo
80 posts
 
And you seem to like to present rather narrow, limited, subjective, anecdotal information of little use or value to those concerned with actual class d amp performance.
sebollo001
39 posts
 
Kuribo,

Unfortunately there's not much information about the performance of these new modules.

But I don't think the information I provided is invalid. In fact, the comparison was performed by a serious sound engineer, who has tons of experience with different amplifiers and sound systems.

In fact, this information, as well as what's been posted in the German DIY forum, seems to be rather precise, as all the users have excellent reputation testing and comparing amplifiers.

The Anaview AMS1000-2600, with the latest AMS control technology, is rather new and not many systems have been using these modules.

However, it has been objectively compared three times against the Hypex NC400. In the three occasions the Anaview AMS has outperformed the NC400.

There's a group of DIYes buying a batch of AMS amplifiers, we will probably get new opinions soon.

In my own experience, currently the AMS1000-2600 is the amplifier to beat at a reasonable price.

BTW do you happen to own any class D amplifier?
kuribo
80 posts
 
According to Anaview, and a manufacturer who markets an Anaview based amp, the new module doesn't sound any different than the old one. The old one has been compared to ncore and found lacking by many. There are a few comparisons of the new module to ncore on various European sites and again, most I have read have preferred the ncore.

Yes, I have owned Spectron, Tripath, Ice, and Hypex.

No doubt some will prefer other class d amps to the ncore, just like some prefer class a to class d, tubes to ss....Different strokes. That is no surprise...In class d, or even other class for that matter, nothing compares to Ncore objectively. Surely there isn't one amp for everyone, so it makes little sense to imply that somehow amp a is "better" than amp b because some people on an audio board prefer it...
sebollo001
39 posts
 
Kuribo,

I’m afraid that the information you are providing is not correct. Patrick Bostrom (founder and lead Engineer of Anaview) has already explained that the new AMS modules have notably better performance than the old ALC ones. Specifically, the Adaptive Modulation Servo technology delivers a more refined treble with less THD.

Dennis Deacon from D-Sonic also explained that the AMS modules sound better that the ALC in his system.

The Europeans DIYers also found the new AMS1000-2600 better than the old ALC1000-1300, most notably in the treble performance. Both modules are super dynamic, but the AMS has a more organic sound that can be listened for hours without fatigue.

When compared against the Hypex NC400, the AMS1000-2600 comes on top. Three highly regarded members of the German DIYforum, and a professional sound engineer all agree with this. Up to know, not a single person who has compared the NC400 vs the AMS1000-2600 has preferred the Hypex module. In several different systems with different speakers etc, the AMS technology outperformed the Hypex NC400. You may think that based on simple specs the NC400 should sound better, but real life test have shown this is not the case.

You should understand that the NC400 and NC1200 modules are in a completely different performance league. Yes, you can check the similar specs. Yes, Mr. Bruno commented they are just different in the power capabilities. BUT THEY DON’T SOUND THE SAME IN REAL LIFE. Highly respected members in this forum have already checked this point and all agree NC1200 >>> NC400. So when you talk about Hypex, please take care of specifying the power module you want to talk about.

This is my personal take on the current class D high end options:
- The absolute performance leader seems to be the Hypex NC1200. However to this day no one has compared it to the most powerful Pascal and Anaview modules. Also, its price/performance ratio seems to be very low (compared to the other high end class D offerings)
- The price/performance leaders are the newest Pascal and Anaview modules. Here, Hypex is playing catch up, but starting to offer a customized version of Ncore to the OEMs which supposedly will have better dynamics and power capabilities. Merril and NAD will be the first adopters of these customizations.
- The Hypex NC400 was never a top performer, but used to be the best price/performance option for DIY. It has now been proved that better modules can be had for less money that simply perform better.

BTW, if you only base your opinion in technical specifications, you may find interesting to know that the Hypex Ncore is not the leader. At least the new Benchmark AHB2 has clearly better specs, within its power range.
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