On my system the sound improved when I switched all RCA cables from "Premium" Amazon cables to this AnAudiophile RCA cable. Bass sounds more defined. mids remain unchanged to me and that is fine as my system is already good here. The treble is slightly stronger - I adjusted my system ever so slightly as i like a more neutral with touch of enhanced highs. That should tell you that on a revealing system upto a certain point cable do make a difference. There is also more detail in the higher frequencies and the soundstage perhaps as a result appears more defined. instruments just sound more lifelike and have body and decay as a result the listening experience has enhanced for me. I am waiting on a DIY cable parts from this seller which I will test against these once I receive them and build. Highly recommend.
Good quality!!!