Dear GarMan,

Thanks for your good advice. I did spend a lot of time listening to resistors in the early nineties. At the time comparing Roderstein, Holco (whole copper) Welwyn and the expensive and very clinical (and I mean that in a good way!)Vishay.

The passive controllers use them in key points. See picture above this shows some Vishay types

I used to buy them from Sonic Frontiers in Canada

Which in your opinion offer the best balance between sound quality and cost?

Thanks

Howard