Audiocap PCU

I'm thinking of swapping output caps in my amps and was going to go with the Relcap PCU
I don't see much on this cap in the forums has anyone tried these caps for coupling positions in amps or heard them before.

At this point I would like to get opinions on how these sound for those that have experience with this particular cap

I currently have russian caps in my amplifiers and these tend cut off some of the higher octaves after carefull listening ..great midrange though

Opinions appreciated