Serge Auckland wrote:

Andy Evans wrote:
As to audio quality, a conductive plastic pot will have zero effect on
audio quality.

Here's another view from Allen Wright (designs amps)
"Vishay cermet are good. One of the biggest con acts has been the
pushing of conductive plastic pots to the audio industry. I don't care
what the brand is - if they make a CP and a cermet (or even a quality
carbon) then my experience is that the cermet KILLS the CP for sonic
quality. The VISHAY cerment (made by their french wing Sfernice))
sounds. like two good fixed resistors, the identical looking CP sounds
like ****! Allen

Oh dear someone else who thinks resistors have a sound.

A pot, whether cermet, conductive plastic, carbon or whatever is a pure
resistance (discounting irrelevant tiny amounts of capacitance and
inductance- wirewound pots excepted) and consequently are linear to the
limits of measurement. Therefore how any pot can be better than another
for sonic qualities is beyond me. Pots vary in the accuracy of their
law, the noise made when being altered, tracking on stereo, how long
they last before track wear is evident etc. Sonic differences are just
not there.

The funny thing about this is that the referenced Mr Wright says he likes Vishay
Sfernice's cermet pot, yet Vishay Sfernice themselves promote the conductive
plastic version as better for audio. Nothing to do with 'having a sound' btw -
it's simply that cp pots have lower rotational noise ( they don't crackle when
turned ).

You might care to know that famous high-end UK recording console maker Neve uses
those very same cp pots that Mr Wright rejects.

Graham