Yup, we need more Glenn Crofts in the audio industry!

Pity, though, he doesn't rate stepped attenuators or polypropylene caps much (both of which have been fitted inside my modified Charisma, to great sonic effect)....

To my ears, they're simply more accurate than their carbon-potted or electrolytic counterparts, and therefore one simply hears more of what the circuit can do! There are no downsides I can detect, unless one simply seeks a more coloured or 'warmer' sound.

Marco.