Class D amplifiers. What's the future look like?


I have a number of amplifiers: Luxman C900U, Bryston 4BSST2, Audio Research VSI 60 Integrated, NAD C298 and some other less noteworthy units. As I swap them in and out of my main system, I've come to the conclusion my very modest NAD C298 is about all I really need. Granted if I had extremely hard to drive speakers, I might be better with the Bryston or Luxman, but driving my Harbeth 40.2 speakers, the NAD is just fine. 

I thought a while ago that class D would quickly overtake amplifier design type mainly due to profit margin which I think would be much greater than A/B and tube. I'm not saying the other design styles would go away, just that D would be the most common style. 

Clearly my prediction is not panning out, at least in the mid and high-end audio world and I'm wondering why? It seems companies such as Bryston, Luxman, McIntosh, Hegel and so many others are sticking by A/B. I'm no "golden ears" guy, but is the perceived sound issue(weather real or imaginary) still holding D back? Maybe my assumption of profit margin is not correct? Maybe the amplifier manufacturers are experimenting with D, but keeping tight lipped until release? Perhaps brand loyalists don't want change similar to what happened with "new coke". What else am I missing?

 

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Showing 8 responses by mahgister

I dont think attacking people good faith is a good idea...

And atmasphere is certainly not a "peddler" here...

I say that and i am not his customer and will not be probably because so much i want to try my wallet will say no and anyway i am happy totally with my minimal acoustic satisfaction threshold ...

I say it because atmasphere help people with very wise and knowleadgeable posts i like much to read attentively and he dont need to sell anything here to make a living ... He is an engineer not a seller...And i am a grown up perfectly able to detect back thoughts and bad faith ...

And the same is valid for any guest new people here... We all have our opinions and are free to express it, customers or even sellers or engineer, i hate censorship and ban appeal arbitrarily proposed by ego motivation ...

And the lost of some knowledgeable members is too much , better to loose some less knowleadgeable others as myself or anyone else ...😁

Sorry if i offend some...

No ad hominem attack  this must be a rule... Arguments only matter for the discussion...

 

I like Steve Huff...As a human...

But his room has nothing to do with acoustic optimum...

As many reviewers he sell gear...

Not acoustic knowledge which is over any piece of gear the ground of musical experience in sound...

It is not your amplifier nevermind the class, you must upgrade... Tune your room and buy the BACCH filters...

And buy any amplifier you wish too if you can afford it... I cannot ... 😊

But if you do one thing , tune the room a bit...

 

 

Great post from atmasphere answering the Quotes from decade ago...

it seems that class D and related design initiated a revolution , it is not an upgrade among other upgrade choices but another audio level not only for high end designer as him but for consumers  ...

😊

 

 

So, if I understand you correctly @mahgister then the idea that the old school separate pre amp and amp approach being "better" would sort of fall under the bigger is better type of logic, as well?

No you did not understand me at all sorry...

I never said that bigger cannot be better, with or without pre-amp...

I never said that upgrading is useless...

I never said that costly design are not often way better...

I said that BEFORE thinking about bigger, upgrades, and costlier options, we must LEARN about acoustical, mechanical and electrical embeddings and also about synergy and optimization (tweaking ) ... We must learn about our own acoustic experience UNDERSTANDING ...

Because beside the "law" of diminushing return there is another principle i name M.A T.S. : minimum acoustic threshold satisfaction...

my own system is under 1000 bucks and i dont need anything more...Not because it is the better , it is not, but it is so well optimized and so well embedded that it put me in sonic heaven...

It takes me years to understand with experiments in a rooom how to embed a system... its pay now... I listen music with a relatively good timbre, with minimal spatial soundfield characteristics definition and actual immersiveness level optimal for the price...

I compute that it will cost me 10,000 bucks to upgrade my satisfying 700 bucks system , nothing less...

I dont need it because lost in music i am able to forget sound without being bothered by any too evident limitations... I called that a rightful embeddings in the three working dimensions for ANY system at ANY price : acoustic, mechanical and electrical...

 

 

 

 

The "Law" of diminishing return which is not a law but an observation had two faces: a subjective side and an objective side...

The subjective side is related to our own acoustic history and learnings and limits in qualitative discerning power and abilities...

The objective side of this observation reflect the ALWAYS NECESSARY optimal trade-off choices or the non optimal one , introduced in the audio gear system by any components design limits when embedded in a room optimally or not and coupled with other design reflecting other trade-off choices too ...

Most people confuse this two correlated side of a problem with a "law" which anyway is not a law but an observation about the psycho-acoustic subjective factors and the objective audio design factors, they reduce or simplify it for everyone with a negation of the alleged claim that " improving" or "upgrading"  ONLY the gear will NECESSARILY improve the acoustic and psycho-acoustic experience, most people reduce and simplify this observation even more when they say that the hypothetical claim about a direct linear link between price and acoustic quality experience is false ...

This observation , called improperly a "law" , is a very astute and true observation of a complex psycho-acoustic problem coupled to acoustic and physical material electronic design ... ...

Impressive list of opinions...Thanks...

But i know nothing in amplifier design...

As many here...

It will had been interesting to know the date and year of these designers opinions about class D ...

 

We are all lucky to have an expert of this caliber swimming in this little pond...

Any attack on his moral standing as a member of audiogon must be counter with vigor...

We can loose many other members without loosing much, beginning with me, but no serious audio site can deal with an helpful adviser lost of this caliber... Those thinking the opposite are idiots.. I dont mince always my words... Nor am i always diplomatic,..Sorry... I know you think the same as me ... 😁

Anybody reading his very informed posts think  the same... I know nothing about amplification design but i am able to read articles and tech information...

 

Many thanks for coming out in strong defence of Ralph, who is a humble and careful commentator who compared to many on this forum is a master of his chosen subject

After years of reading posts we can distinguish easily honesty and stupidity...

Atmasphere is under the label "honesty" for me...

it does not means that he is right in all he said but that he put his name on what he said...

I believe him , anyway i had no competence in amplifier design...but he is not alone in a desert , others experienced this new types of amplification...

Then listening  to atmasphere explanation and thinking about it is better than accusing him with no competence to sustain the accusation ..

My 2 cent....