Bass and Treble Dials

Hi Kijanki,
I have in my home electrolytics, poly carbs, poly props(metalized and pure film), paper in oil, poly styrene and teflons. I have played a bunch. I measure everyone to less than 1% tolerance. I don't have any mylars and generally agree about the sound of those, but I must say, I have had a russian set of mylars that were outstanding, so who's to say. Ok, only a few pio, ps & teflon.
I stand by my comment, really only an opinion that a good tone control circuit (eq) could be built with very good end results. More bands for flexibility would be nice.

Unsound,

That would be really interesting to insert such device in a chain spdif-in spidif-out but I would still stay out of correcting.

Timlub,

It looks like you know your caps. Outstanding Mylars? - no way (Dielectric Constant = 3). It is probably Teflon inside - who would trust Russians? (LOL) Production wise selecting caps below 1% would not be a practical solution while caps like that are very expensive (and still would make imaging a little worse). Circuit would most likely include additional buffer stage that would not make clarity any better either. Potentiometer itself has track to track mismatching about 3dB. Even expensive pots have mismatch of 1dB - still very audible tone change between channels destroying image.

The cheapest amp in Best Buy has all sorts of tone controls - often equalizer, loudness corrector, spatializer, rumble filters, noise filters, balance control etc. It is lacking one minor thing - a good sound. Same goes for many Home Theater systems - a lot of speakers but none of them good sounding.

I think the Luxman integrateds are high end and high performing units with tone controls. So if some one really wants that and can afford them those would be an option.

Kijanki,
http://www.tactlab.com/Products/MS2150XDM/index.html

Kijanki,
Here are the Russian mylars Polyethylene-Terephtalate)K73
They took alot of burn in, but after a couple hundred hours were quite good.