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
128x128noble100
I am not saying anything about the reliability of those claiming there aren't any major differences between the old and new Anaview modules. I am just saying those who have intimate knowledge have made these comments;in fact, it is against their best interests to do so..it is a bit different with Aluminati where it is in their best interests to claim the non-hypex module is better. There are many opinions out there. Hypex has the best objective performance but regardless, it comes down to personal preference. The only way to know for certain is to listen to the various modules and decide for one's self which is preferable.
All, through recent emails with Merrill, I have learned a little bit more about the $2500 Merrill Audio Taranis stereo amp.

The amp is a power house: in stereo mode it outputs 400W/8 per channel, growing to 600W over 4 Ohms. For the most demanding speakers, it can be configured by the factory to operate in bridged tied load for mono/biamping operations: each bridged chassis can output a whopping 1200W/4 Ohms. The circuit can deliver a high voltage peak of 80V, and a high current of 26A per channel. According to Merrill, even difficult to drive electrostats are compatible with the high voltage of Taranis. Do not be concerned about damping factor for low impedance speakers, the value is a hefty 5000.

According to Merrill, Taranis uses a uniquely configured Hypex SMPS that complements the full-blooded NCore 5th order self-oscillating class D power conversion technology inside it. Yes, you read correctly: There is no lower end Hypex UCD inside Taranis at all. Nor is the amp powered by some DYI module derived from the entry-level NC400 part.

Taranis is no basic NCore integration: Amongst other things, Merrill designed a custom differential input stage for the amp with a high current drive for the output stage. The stage raises the input impedance to a substantial 100K Ohms for excellent compatibility with most preamplifiers and DACs, and reduces common mode noise. Taranis achieves an impressive signal to noise ratio of 120dB.

Last but not least, the Taranis steel chassis features a LED power meter on its mirror-finished stainless front panel. The meter shows 3db increments from -60db to -3db, actually 0db. The last led starts to illuminate at approximately -2.9db upwards, and gets brighter until 0db is reached.

As you know, I am extremely fond of well implemented NCore, such as what Merrill has achieved with this technology inside the Veritas monos. Hence, I am looking forward to discovering the musical performance of Taranis live.

You will find more information, including tech specs at:

http://merrillaudio.net/taranis.html

Merrill can be contacted at:

Merrill Wettasinghe
Merrill Audio Advanced Technology Labs, LLC
www.merrillaudio.net
Tel: 415 5MA.HiFi (415.562.4434)
Email:
taranis@merrillaudio.net
If it doesn't use a modified version of the nc400 like the new NAD uses, then it must use the nc1200 as there are no other ncore modules currently produced according to HYPEX. Also, the stock ncore400 has a better SNR of 125db, not bad for some DYI entry level module...
Hi Kuribo, as soon as Merrill releases further Taranis details, I will post it. G.
From the Merrill Audio web pagefor the Taranis;

"Using pure Ncore Technology..."

"Designed using Ncore technology from the VERITAS Monoblocks.
With plenty of power to space, the Taranis Stereo Power Amplifer
reproduces music with ease, speed and superb detail.
A specially designed high end input stage with a high current drive give the output stage speed and detail..."

400 watts/8 ohms
600 watts/4 ohms
1.5milli ohms output impedance
100k input impedance
0-50khz +0/-3db Frequency response
26db gain
+/- 80 volt Maximum output
26 Amp Maximu Output
130db Signal to noise**
0.005 THD+Noise

Also from the press release;

"The Taranis Stereo Power Amplifier is powered by the same NCORE technology as the $12,000 VERITAS Monoblocks."

Notice the 130db S/N ** from the web page. So is it 120 or 130? Typo errors occur all the time so must confirm. 130 is most impressive if correct.

From both the web site and press release it is most definitely based on none DIY NCore and is based on NC1200, but in a variation of most likely.