Do all audio amplifiers really sound the same???

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Jakob2 said:


That is a reasonable argument. 🙂

Btw, i´d say everybody should do dbts sometimes, because it is an interesting experience and i think if you learn more about the way your perception works it does help in every case.

But please don´t believe you must have found the sonic truth doing your first dbt ever. 🙂

I have not only participated in blind tests myself, but also conducted dbts with summed ~100 participants over the years. And my concerns regarding the traps are based on this experience and the literature as well.

I was quite surprised in the beginning to see that even experienced listener fail if being unfamiliar with blind test protocols. They did a lot better after getting over this initial period by doing some training.

Btw, did i already mention that controls are an important detail? 🙂

Jakob2

Yes you did! 🙂

Allthough most people in the thread seems to skip that part..


Listen now people.. go back and re-read ALL of Jacobs posts, digest it and don't come back until a little light shines up. 😉


/Peter
 
syn08 said:


So, for a subjective testing session, you would suggest selecting the subjects and avoiding those "set to consume a myth"?

If I was charged to conduct an open subjective, with mythical and plain equipment in comparison, I would call frugal DIYers and affluent audiophiles, plus some recording engineers. After impressions and debates, each group would walk out better educated by each others influence. Multiculturalism works.
 
janneman said:
It's really fascinating to study it, you read things you can hardly believe. Then you go to this forum, and what do you know, it is exactly as they found in their studies.

They found that most amps was audibly different?

🙂


But the main obstacle against any progress in knowing ourselves (because that is what it ultimately boils down to) is our idea that we are very good at things we do, we basically don't make mistakes, and if somebody suggests that maybe our opinion or view on something is not what we are convinced of, we feel it as an attack on our person. As if we look bad, as if we are ridiculed. You need to develop the very difficult ability to 'jump over your own shadow', if you know what I mean.

Jan.. some people is past that since many years. Don't judge everyone else from where you are sitting.

And the fact that you learn about this doesn't mean that you don't suffer from it. I can read all the books I want until I am blue in the face, but I STILL am wired just like you, and I can't escape that very human, pure subjectivism either.

Jan Didden [/B]


No, we are all wired differently. Synapses forms as we live. The brain litteraly changes depending on what we do.

A good start is to look at this thread to understand how differently we think, react and discuss.

Some are dogmatic some pragmatic. There are very different levels of prestige and so on. Some have sculls thick as a concretefloor while other are openminded.


/Peter
 
bear said:
perhaps someone here wants to participate in the Amps that DO sound different thread that I started?

Just a thought...

_-_--bear


Good idea, bcs if ABX stands true, the moderators must delete the solid state, pass labs, tubes, electronic components sections etc. and rename DIYaudio.com to nothing-matters.com 😀
 
Schumpe's experience is very much like my experience with red wine. Just give me something 'acceptable' to drink and I am happy. Paying outrageous prices for 'fine wines' never made any sense to me.
I must admit that ONCE back in 1974, I tasted a red wine that, at the time, I thought exceptional, but I was probably influenced by the company I was keeping at the time, the label on the bottle, and the price: 200 Swiss Franks. (I was in Switzerland at the time). I, too, have made my own wine, and know that it is not that difficult to do.
I will stick to Cognac, because it does seem to taste differently to my palate. I will stick to the cheap stuff, why pay more?
 
salas said:
Good idea, bcs if ABX stands true, the moderators must delete the solid state, pass labs, tubes, electronic components sections etc. and rename DIYaudio.com to nothing-matters.com 😀
Oh, come now! Even if all amps do/don't sound the same within their operating range, there are tons of reasons to build different amps! Different speakers have different loads, different rooms need bigger/smaller amps, etc.

You could make an argument that all cars get you from point A to point B, which would be factually true, but the fun is often in how you drive and the route you take in getting there, regardless of whether the end result is the same! I may prefer a Hummer (blatant class A energy hog) and you may prefer a golf cart (class D, Tripath, etc.) Regardless of the vehicle/amp, we will both have gotten where we were going, and chances are it will have been more fun if we build our car/amp ourselves. 😀
 
salas said:


If I was charged to conduct an open subjective, with mythical and plain equipment in comparison, I would call frugal DIYers and affluent audiophiles, plus some recording engineers. After impressions and debates, each group would walk out better educated by each others influence. Multiculturalism works.

Understood.

I must be dense today, could you remind me what was the expected outcome for this open subjective test?
 
Pan said:


You question if differences are trivial or significant first, and then you go on telling about your new system smokes your old and that you hear words that you didn't hear earlier..?

That's funny. Oh well.. I love the Man by the way.



/Peter


Ralph Waldo Emerson said:


A niggling consistency is the hallmark of a small mind.


The fact that I couldn't understand a word here or there WAS and IS trivial. You could transmit Bob Dylan over a tickertape and still convey a significant part of the message.

The point is that amplifiers get better and better AND cheaper and BETTER by definition MEANS more ALIKE.

w
 
dfdye said:
Oh, come now! Even if all amps do/don't sound the same within their operating range, there are tons of reasons to build different amps! Different speakers have different loads, different rooms need bigger/smaller amps, etc.



That's easy. Just leave the chip amp forum and parallel/bridge/active/passive according to requirements.

And a combined S&M forum for tubes and analogue.
 
Pan said:
[snip]Jan.. some people is past that since many years. Don't judge everyone else from where you are sitting.
[snip]

Well, if they are, they're (with a few exceptions) not on this forum. And if I judge people by their actions and statements, what wrong with that? Don't we all?

Pan said:
[snip]No, we are all wired differently. Synapses forms as we live. The brain litteraly changes depending on what we do.

A good start is to look at this thread to understand how differently we think, react and discuss.

Some are dogmatic some pragmatic. There are very different levels of prestige and so on. Some have sculls thick as a concretefloor while other are openminded.


/Peter

Yes we are wired differently. I said this before. I said before that it is a way of speaking; that it's really the functionality that is overwhelming the same. Good point.

And those other differences are precisely the topic we are discussion. The thick sculls are the ones that don't agree with you. The openminded ones are the ones that agree with you. Jeeez, isn't this all obvious?

Jan Didden
 
syn08 said:


Understood.

I must be dense today, could you remind me what was the expected outcome for this open subjective test?


Open subjective debates and some convergence between the people and their group persuasions I guess. Some bias changes and some middle of the road MVP amp 60% acceptable as best compromise I would guess, in such a hypothetical test.
 
Waki, I wish I could soothe you but,

wakibaki said:
...I am concerned with the seeming indifference to resolution of the issue or arguments advanced.


My continuing interest in the subject is driven ... a concern for the integrity of information.


w


first, information is infinite. No need to worry about its integrity. Similarly, everyone's input is important.

But unfortunately, most people are only interested in repeating their own point of view. There will probably never be an end, or resolution, to our seeking; especially with people continually repeating themselves. But there are a few special people who have decided to wander outside their own boundaries, and propose ways of exploring the middle ground between their POV and other's.

I'm going to bet that those people will find interesting things. Everyone can just keep on peeking out their blinds...
 
Andre Visser said:


I would think that technology and knowledge have improved a lot during the last 40 years, are you suggesting it must stop now?

Yes, that is precisely what I am suggesting.

Where do you think the good engineers interested in audio go? They get snapped up by (or even start) the companies that make chips like the 3886 or Tripath, but the majority are not interested in audio, other than digital audio.

That's where anything exciting is going on, design at chip level.

Pretty soon there won't be much left to do there.

I told you already, audio amplifier design is dead. Moribund would be a more accurate description, but I'm trying to get people's attention. A lot of what is being done now was worked out years ago, just implementing it was a materials and fabrication problem. It's trivial to design a fully digital 24-bit resolution PWM DAC in VHDL, you just can't get chips to run fast enough.

I know, I thought I'd made my fortune until I did the calculations.

w
 
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