Products > Dodgy Technology

Zero distortion amplifier

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Brumby:

--- Quote from: Refrigerator on April 18, 2018, 01:05:53 pm ---A simple audio cable also has 0% distortion.

--- End quote ---

Are you sure?

Zero has no wiggle room at all.  Even thermal noise from the wire's atomic structure would be outside the specification.

thermistor-guy:
Quotes from the OP's attachments:

"absolute zero distortion"
"actually zero distortion"
"complete absence of any distortion"

I'm picturing a T-shirt. The front says: "The Stupid. It Burns." The back says: "Danger. Highly Flammable. Audiophool inside."

Brumby:

--- Quote from: thermistor-guy on April 19, 2018, 02:27:12 am ---"absolute zero distortion"

--- End quote ---

Yeah.  This one in particular gives no room for any tolerance.

Cerebus:
I wonder how many people bothered to find out, before commenting, that this is a design (and presumably advert) from the early to mid 1960s?

By 1960's standards that "zero distortion" claim is close to pure "truth in advertising" compared to the claims that were made for many products. From what I can find out this was, for the day, a genuinely high quality bit of kit, and they probably couldn't measure the typical harmonic distortion with the instrumentation then generally available. Remember, the contemporary HP 204B sine wave oscillator was specified as harmonic distortion "< 1%".

Circlotron:
Looks like some people didn't believe it back in the day either.

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