This is a site where we can read of a review of a book written by "very
talented and experienced Electronics Engineer", G. Randy Stone. Mr Stone
while explaining the basic electronics stuff he also talked about the some
myth and urban legends.

http://www.electronics-tutorials.com...project-source
book.htm

Make sure you read his own seal electronics. Selling DIY parts and his Sweet
Amp which is " the finest performing audio power amplifiers available at any
price". Surprisingly, not cheap.

and some excerpts from his FAQ

6. Aren't there complex characteristics or nuances of sound that cannot be
analytically interpreted when comparing amplifier types? Isn't the "best"
amplifier a matter of personal taste?

It has been scientifically proven on a number of occasions and with a
variety of tests that there are no mysterious sonic qualities undetectable
to analysis equipment. Therefore, the determination of quality is a
relatively straightforward process of measuring the sonic accuracy between
the amplifier's input and output. In other words, the "best" amplifier will
be the most "transparent." Obviously, it is every individual's right to have
a personal sound preference, but, generally speaking, professional sound
engineers choose power amplifiers with the lowest distortion and highest
reliability.



7. How about Class-A audio power amplifiers? Don't they sound better than
Class-B designs?

To make the statement that one amplifier sounds better than another poses
the requirement that the differences in sonic reproduction be discernable to
the human ear. It has been proven that the human ear is capable of detecting
high-order odd harmonic distortion as low as 0.3%. Crossover distortion, as
produced by Class-B operation, is the worst kind of distortion, being
high-order odd harmonics across the entire audio bandwidth and existent at
virtually all signal levels. The worst-case conditions for crossover
distortion is at very low volume levels at high frequencies (i.e. close to
20 kHz). Even under these extremes, several of the amplifier kits in this
catalog are typically capable of THD levels better than 7 times lower than
the minimum audible level. Therefore, in these or similar designs, it is
quite impossible to detect a difference between Class-A and Class-B
operation based on human perception, as long as all other performance
variables are identical.



8. Do all of your amplifier kits incorporate high levels of global negative
feedback? Are high feedback levels detrimental to sonic quality?

The belief that certain sonic problems result from high levels of global
(i.e. overall) negative feedback is a myth. In reality, high levels of
feedback improve virtually every performance aspect of audio power
amplifiers.



Good luck!



p.s. Is RAHE a all Male forum. I have not seen any female contributor, yet.
Wonder why? Will be posting on that soon.

"Chelvam" wrote in message
...
This is a site where we can read of a review of a book written by
"very
talented and experienced Electronics Engineer", G. Randy Stone. Mr
Stone
while explaining the basic electronics stuff he also talked about
the some
myth and urban legends.

His name is Slone, not Stone.

Norm