2. amps-preamps
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Class D = Trash?

So, I'm on my second class D amp. The first one, a Teac AI-301DA which claimed to use an ICE module, was unlistenable trash. I burned it in for a few weeks, it just couldn't perform, so I sent it back. Following that, I tried the new Emotiva A-300 (class A/B). It was significantly better, but lacking in too many ways for my tastes. So I changed gears, got an 845 SET from China -- and it was an immediate and massive improvement.

So, before I went further down the SET road, I wanted to try a better class D product using a modern class D module. I settled on the D-Sonic M3-800S with the Pascal module and custom input stage. I read from reviews that these things like to have big cables, so I picked up an eBay 8 gauge power cable (Maze Audio, el-cheapo Oyaide copy plugs, braided 4-wire cable) to go along with it.

Mid-range GONE.
Soundstage depth CRUSHED.
Euphonics DISAPPEARED.

Yes, resolution went up. Driver control went up, allowing me to play compressed rock/pop and orchestra with the speakers being able to render it all. But enjoyment in the sound is basically gone. Using my best power cable (LessLoss Original) improved performance, but didn't fundamentally change the amp's nature. I ran back to my headphones (Focal Utopias) to detox my ear canals.

So, how long does a class D need to burn-in? I want to give it a fair shake before writing the technology off forever. 
madavid0
genez
134 posts
 
NuPrime changes everything.... Amps = NuPrime ST-10 NuPrime STA-9... NuPrime STA 6.

They have also a great line of integrated amps. These have a sweetness to them that most other class D’s can not touch.
http://www.nuprimeaudio.com/index.php/products/amplifiers-and-preamps/integrated-amps.html

http://www.nuprimeaudio.com/index.php/products/amplifiers-and-preamps.html  
seanheis1
359 posts
 
The Marantz PM-10 and NAD M22 are hypex Ncore. If you haven't been pleased with Class D in the past, I can't imagine that a new name on the box will change things much. 
georgehifi's avatar
georgehifi
4,966 posts
 
Here is what a well known quality speaker manufacture believes with what they put into their own active monitors.

 JM Labs Focal Speakers.
" The amplifiers are conventional Class A/B designs rather than the increasingly common Class D option, because Focal thinks the traditional technology gives a better sound."

Cheers George

retrofunk
15 posts
 
I have had a number of Amps; SS, Tube, Class D. 3 years ago I replaced my Cary V12R (Tube), with a Bel Canto, then I (in my opinion) upgraded to a Spectron Musician III with the remote sense cables (I will be listing this next week), I recently upgraded again to the Merrill Audio Thor Monoblock's. For reference my pre-amp is a Vac Signature Mkiia with Phono Stage, I have various turntables, a Bluesound Vault and the Speakers are Dynaudio C1's.
IMO the Thor Monoblock's are without doubt the best Amps I ever owned and frankly one of the best I have heard. In my set up, having a quality pre-amp helps, the Dynaudio's love power - the bass comes alive. I am not an audiophile, do not have 'golden ears etc so I cannot talk about 'Blackness', "Presence', 'Soundstage' etc....all I can tell you is that I have asked friends to pick their favourite track, then sat them in the best position to listen and walked out the room. I come back in and they are speechless, one even cried ...but i expect the wine had something to do with that! 
To the original question, Merrill recommends 500 plus hours of burn in. I'm 49 years old, I am sure the frequency spectrum I hear is not the same as when I was 19...but for me... I am hearing the best reproduction of music I have ever heard in my life. Again, just my opinion, and we all have one !!! LOL 
guidocorona
4,114 posts
 

@ mmrkaic


On the contrary, I enjoy the sound of good class D as much as good class A/B and even some tubes.


My own Rowland M925 amps, for one thing, sport NCore NC1200 modules, and run in class D.


G.

 

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