Bob Burwen imparts his knowledge

@giantsalami Inded!

simplified, all you need is tone controls or an EQ.? I'm pretty new at this, but, I think some of his points are wrong. I have read many posts and gathered information to build my systgem in the last 3 years from AGon and believe using quality from the outlet up helps all the way around. I do not have a high end system by any means, but every point of my build has been adressed and improved until this point...and i am sure it will continue. love this little hobby!

I'm not sure to congratulate you or express my condolences. This hobby is quite the adventure!! :-)

IMO you have to be open to perspective from those who've proven themselves technically or can back up their opinions with provable fact, not more opinion. Audiogon is often time lacking that perspective. I'd recommend taking in as much info as you can and applying it to your situation...see what works for you. But at the same time, don't be dismissive, particularly when it comes to the technical aspects of this hobby. Many hear have developed the philosophy that "If I don't agree with it, I'll never admit if I don't understand it, so its false."

Applied perspective is what makes this hobby so fun. What works for you, may or may not work for me, but I'm willing to try it and see. Then, pass on what you've learned to someone else.

All the best to you @giantsalami 

Did anyone understand what he meant by "Frequency Response"?

Is it simply having a FR from 20-20k? (or greater)

Or does it also include the the actual "shape" of the waveform? Which I consider another aspect of frequency "response"

What do I mean? - if you take a perfect sine-wave and feed it into different amps the actual shape of the output waveform will vary slightly, dependent on the circuitry and parts used in the amp

- if the circuit has a "fast" response, the output waveform will be closer to the original.
-whereas if the circuit has a "slower" response the waveform will not be as accurately reproduced, resulting in a tonal variation,

One "metric" often talked about in audio circles that demonstrates this aspect is PRAT. The term I prefer to use is "Dynamic Performance".

e.g.- the ability to reproduce the "crack of a rim shot requires extremely fast dynamic performance in an amp - which means the waveform has been reproduced more faithfully. Some amps do not sound as "crisp" as others.

I have also observed this type of tonal variation when using different cables of all types - i.e. IC’s, speaker and power cables. But he believes cables do not add any value? (Hmmm.)

Then there were his rather generalized observations pertaining to speakers - where he did not mention anything about the tonal variations from one speaker to the next that are dependent on so many factors, such as driver choice, cross over design, cabinet design and materials used.
- so if I hear him correctly, an equalizer will make all speakers sound alike?
- I don’t think he thought this one out too clearly either

I do believe that this hobby if far more complex than the rather simplified observations Mr. Burwen has talked about - but if they work for him, so be it.

But he does sound a bit like Donald Trump - "It’s all fake!!!"

For the rest of us - the truth is out there :-)

BTW - this is just another opinion.

@williewonka your response seems fitting...

At its simplest, the frequency response is MEASURED output. Unless you’re willing to MEASURE and quantify your findings as fact, everything use is mute.

Sine-waves are essentially frequency shapes.

Different materials have different conductive properties and can color the signal.

Equalization is used to tailor signal coloration.

I’ll repeat my initial point...unless your willing to MEASURE and quantify those findings as fact...good luck finding the truth. Then again, perception is perceived reality.