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
I don't know how it compares to other Class D amps or what technology it uses, but I just purchased a Peachtree Nova 220SE. It's being used to drive a pair of Aerial 7Ts. The sound is open, bass is tight, imaging extends in front of and far outside of the speakers. Out of the box it was thin and a little bright. It sounds really good right now.
Hi Tim, if X-2 and X-1 use the same Pascal module, I would expect X-1 to have greater ease and authority than X2, with broader stage and images, but I do not expect there to be a significant difference in sonic / musical signature.

You should ask Aluminati if they are enabling the bridging functionality on X-2... That is, are they going to let an X-2 owner flip an internal jumper to bridge their unit to mono.

Note that you can get a pair of D-Sonic M3-600M monos based on Abletech for $1950... See:
http://www.d-sonic.net/products/mono/
Even the Pascal-based M3-1500M cost less than $3K.


Guido
Hi Guido,

Yes, I was thinking the X-1 monos would perform better, too. I was hoping the substantial 500w/ch of the X-2 would supply good ease and authority at half the price.

Matt informed me that Aluminati is offering a 15 day in home trial on the X-2 and has a 2yr parts and labor warranty, and probably on the X-1s too. I think you would say that it'll take more than 15 days for the amp to break in. I'm not sure, you may be right.

Aluminati said the X-2's S-PRO-2 board has the capability to be bridged but a switch must be flipped and a jumper must be added to the circuit to tell it to run in bridge mode.

The D-Sonic M3-600M monos at $1,950/pr., possibly even the M3-1500M at $2,650/pr., are my current backup plans if the X-2 is not to my liking. The M21500Ms had a rave review from 6Moons and, according to D-Sonic, the M2 and M3 are identical amps.

Thanks,
Tim



Hi Tim, two weeks of break-in will yield a maximum of 320 hours of operation.... This is approximately one third of what I suspect complete break-in time might be. So, in two weeks, you might spot a trend about where sound might be in another 4 weeks, but there is no telling if your conjecture is accurate or not.

I recommend that if you get the Aluminati amp(s) on trial, you feed them FM interstation hash from a radio tuner whenever you are not listening to music... That is, you exercise them 24/7.

Guido
Guido,


Before I buy it, I'm sending it to you for break-in and your upcoming PFO review comparing the Alumanati X-2 to the D-Sonic M3-600 and 1500 mono-blocks. I'll be coming to your place in Austin to assist as requested. Please let me know the date and time to show-up. I'll buy the review sample of the winner.

Thanks for the advice, will do.

Tim



Thanks,
Tim
More to discover