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
Noble100, Your amps are nowhere near full break-in. I have had the same amps since early 2013 and remember well that they continued to improve for many hundreds of hours listening. I reported on the early progress with them and was advised by Guido (I think) that they could take as long as 1200, but I remember that by 600 or so that I just didn't care anymore and focused on other setup refinements. I love mine and the more the rest of the system improves, the better they sound.
Hi Mcbuddah,

Very good to know the M3-600-M's improve over playing time. With my first class d amp, a stereo ClassD Audio 440CS, I recall the amp sounding better and better over an extended period of time before it seemed to stabilize. I tought, at the time, that this was more a case of me adapting to the nuances of class d amplification as opposed to the amp actually 'breaking in'. It's a subtle distinction that's hard to validate one way or the other. I chalked the difference up to the fact I was moving from a class A/B Aragon 4004 to a different class d amp technology.

From my subjective perspective, there was a definite improvement in my system's performance moving from class A/B to class D. This improvement was over a period of about 2-3 months and it was not subtle in nature.

Since my latest change was from one class D amp to another and my ears/brain aural sensing mechanisms have already been indoctrinated to and adapted to the 'class D sound', the change in system performance was less dramatic than it was when I switched from class A/B to class D. Don't get me wrong, there are significant and obvious improvements in several areas with the M-600 amps; it's just that I'm not noticing any clear pattern of gradual improvements in amp performance that I would recognize as the amps 'breaking in'.

To complicate matters, I recently added a multi-sub bass system (described in an earlier post on this thread) that was truly transformational to my system's overall performance. Bass response is now very extended and accurate; measured down to 20hz within 2 dbs and without any measured or noticeable bass modes or nulls at the seating positions. This has unexpectedly resulted in performers/instruments now seemingly occupying well defined palpable and physical space in my living room, the better the recording the better the imaginary affect. My current theory is that this ultra-realism and stable sound staging has distracted me from noticing smaller and more gradual changes in the amps' performance that may be extant over time.

In other words, I'm currently so over-the-moon happy with my system's top-to-bottom rock solid frequency integration and ultra-realism, I've either failed to notice incremental changes in the M-600's behavior or I've ceased to care whether its primary cause is the new amps or the new bass system. All I know for certain is that my system is now functioning extremely well for both 2-channel computer audio and home theater sources. It's hard for me to pinpoint any weaknesses and areas needing improvement. But that won't prevent my continued enjoyment of both nor searching for possible system improvements. I understand that my system is now operating at a stunningly high level and any future improvements will be harder to identify, likely cost prohibitive, less dramatic and more incremental. But this is all just fine with me. I'm going to enjoy the fruits of my efforts and switch my searches to finding some more good music that is well recorded and high resolution. After all, I still have about 1.5 TBs of storage to fill up.

Thanks to all of you who helped me on my long but successful journey,

Tim
I'm interested in D-Sonic M3-1200S-A, can this amp accept both domestic and foreign input voltage, or does one need to return the amp back to D-Sonic to change between input voltage.
Tobeornottobe,

I think you choose domestic or foreign voltage when you place your order. Which means you'd probably need D-Sonic to switch it from one to the other but you may want to call D-Sonic to make sure.

Tim
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