"Bruce J. Richman" wrote:

(3) he has repeatedly claimed in his anti-tube,
anti-vinyl ranting and raving that these products produce audible noise and
distortion, yet he has presented no proof to substantiate his claims.

Why should he need to ?

To illustrate that a tube produces distortion, all you need to do is to look at the
transfer characteristic. No tube has a truly linear 'curve' .... ahem - hence they
are called curves it seems - lol.

I you understand the science of electronics, can draw a load line and interpret it
- that's all the evidence you need to see that any tube will introduce distortion.

Self-noise is also inherent in any gain circuit ( whether it be tube or solid state
) . Again, a knowledge of the science of electronics helps here.

As for vinyl, I was under the impression that tracking error distortion was well
understood ( again from scientific principles ) and the idea of a noiseless vinyl
recording seems to fall at the first hurdle, given the difficulty of producing a
perfect pressing. Phono pre-amps also have self-noise too.


Graham