Class "A" sound, as related to Stereophile.



It's all about the sound.

It's all about sound, not how much it cost; when I got into "high end", I knew right off the bat I couldn't afford it, but I had to find one thing for sure; how do the various components sound in regard to Stereophile's classes, or ratings? In order to know this; I had to acquire the ability to identify "Stereophile's" class "A" class "B" and class "C" sounds, and the only way to do that was: first, subscribe to Stereophile, and next was to go to every high end audio salon within driving distance; there were 5 well stocked "high end" salons within driving distance. (Since I didn't take my wife, that created some problems)

After a few years of subscribing to Stereophile, plus auditioning equipment that Stereophile recommended, I knew the sound of those recommendations, and I absolutely concurred with them; "If you want to hear the music, you got to pay the piper". While that's true, it's possible to get class "A" sound with class "B" bucks or less.

At this moment, I am looking at 8 capacitors that cost $25 dollars each, plus 2 mono blocks with an instant resale value of 6K. Once I take the covers off and go in with my soldering iron, these mono blocks are worth a resell of O; my mission must be a success. After a successful mission, the resell is still 0; but those mono blocks will deliver class "A" or "A"+ sound, and that's some sweet music.

I have to visualize and hear music in my head before I can modify a component to deliver class "A" sound; but that's the only way for me to get what has become a necessity.

The pressure someone is under when they modify, is great, but the rewards are glorious. On these mono blocks, they are too small for the huge capacitors, therefore I have to figure a way to make the case larger. My reward is "sound" with absolutely no relation to money. I often wander if someone with a fat bankroll can identify the sound, or only how much they paid for each piece.


Happy listening.

orpheus10

Koestner, take me to your source; the source of what ever made you say that. That thing called a volume control on the preamp that you turn up or down sets the level to the amp. But I know you knew that. If you turn it up, the speakers get loud, and down, they get quiet.
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The source vs speaker debate is a valid one and there will likely never be consensus. The obvious fact is that both are important. However, I submit that while both are the major determinants of a system’s sound character and audio quality, a great source will work well with a wider variety of room acoustical treatment, preamplifiers, phono sections (providing it has adequate loading adjustment), amplifiers, and cabling than a speaker will, thus the speaker is the primary foundation component when building a complete audio system.

Dicockrum, I have stated consistently, "You can not play the cards you wish you had, you have to play what's dealt" after all is said and done, I have never been able to buy the speakers I wish I had, therefore I have to settle for what I consider is sufficient.

If I had an unlimited budget, I wouldn't have to have that argument with myself, but adequate speakers, and close to top of the line electronics work best for me.

In my listening room, the right channel is favored, I have to turn the left channel up louder than the right because of "room acoustics". When the source is 2 track reel, that problem is corrected.

Enjoy the music.
Koestner 11-13-2016
You are missing Al's point. With a CD player the preamp will most likely be reducing the signal to the amp, not amplifying it. Without some way to reduce the source signal everything would be one volume level, and very loud!

Orpheus10 11-13-2016
Koestner, take me to your source; the source of what ever made you say that. That thing called a volume control on the preamp that you turn up or down sets the level to the amp. But I know you knew that. If you turn it up, the speakers get loud, and down, they get quiet.
The "full scale" (maximum) output of the great majority of D/A converters (whether they are stand-alone DACs or are contained within a CD player or other component) falls between 2 and 3 volts for unbalanced outputs, and twice that for balanced outputs.

The majority of power amplifiers will be driven to their maximum power capability by an input somewhere between 0.5 and 2 volts for unbalanced inputs, and twice that for balanced inputs.

Most digital recordings are engineered such that musical peaks come close to digital "full scale" (the maximum possible digital value).

Therefore in most cases involving a digital source the preamp's volume control will be set such that the preamp's output voltage at any instant of time is less than its input voltage.  And even more so considering that many and probably most users can be presumed to utilize the maximum power capability of their amplifiers rarely if ever.

That is the basis of my simple statement that:
... the preamp doesn’t necessarily make anything bigger, as in many cases, especially if digital sources are being used, the volume control will be set such that the amplitude of what comes out of the preamp is less than the amplitude of what goes into it.
Regards,
-- Al